CVE-2026-27135

EUVD-2026-12919
nghttp2 is an implementation of the Hypertext Transfer Protocol version 2 in C. Prior to version 1.68.1, the nghttp2 library stops reading the incoming data when user facing public API `nghttp2_session_terminate_session` or `nghttp2_session_terminate_session2` is called by the application. They might be called internally by the library when it detects the situation that is subject to connection error. Due to the missing internal state validation, the library keeps reading the rest of the data after one of those APIs is called. Then receiving a malformed frame that causes FRAME_SIZE_ERROR causes assertion failure. nghttp2 v1.68.1 adds missing state validation to avoid assertion failure. No known workarounds are available.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 52.31%
Affected Products (NVD)
VendorProductVersion
nghttp2nghttp2
𝑥
< 1.68.1
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
Red HatJBoss Core Services for RHEL 8
0:1.64.0-3.el8jbcs ≤
𝑥
< *
ADP
Red HatJBoss Core Services on RHEL 7
0:1.64.0-3.el7jbcs ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 10
1:22.22.2-1.el10_1 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 10
0:1.64.0-2.el10_1.1 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 10
1:24.14.1-2.el10_1 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support
1:22.22.2-2.el10_0 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support
0:1.64.0-2.el10_0.1 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8
8100020260331102257.6d880403 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8
8100020260408131901.6d880403 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8
8100020260414073138.489197e6 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8
0:1.33.0-6.el8_10.2 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.2 Advanced Update Support
0:1.33.0-3.el8_2.4 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
0:1.33.0-4.el8_4.3 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On
0:1.33.0-4.el8_4.3 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
0:1.33.0-4.el8_6.3 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Service
0:1.33.0-4.el8_6.3 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutions
0:1.33.0-4.el8_6.3 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Service
0:1.33.0-5.el8_8.2 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutions
0:1.33.0-5.el8_8.2 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9
9070020260401095228.rhel9 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9
9070020260402152654.rhel9 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9
9070020260409073121.rhel9 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9
0:1.43.0-6.el9_7.1 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutions
0:1.43.0-5.el9_0.4 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutions
0:1.43.0-5.el9_2.4 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9.4 Extended Update Support
9040020260421133644.rhel9 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9.4 Extended Update Support
0:1.43.0-5.el9_4.4 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support
9060020260409121057.rhel9 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support
9060020260422064119.rhel9 ≤
𝑥
< *
ADP
Red HatRed Hat Enterprise Linux 9.6 Extended Update Support
0:1.43.0-6.el9_6.1 ≤
𝑥
< *
ADP
Red HatRed Hat OpenShift Container Platform 4.12
412.86.202605271418-0 ≤
𝑥
< *
ADP
Red HatRed Hat OpenShift Container Platform 4.13
413.92.202605271328-0 ≤
𝑥
< *
ADP
Red HatRed Hat OpenShift Container Platform 4.14
414.92.202605060243-0 ≤
𝑥
< *
ADP
Red HatRed Hat OpenShift Container Platform 4.15
415.92.202605060220-0 ≤
𝑥
< *
ADP
Red HatRed Hat OpenShift Container Platform 4.16
416.94.202605200242-0 ≤
𝑥
< *
ADP
Red HatRed Hat OpenShift Container Platform 4.17
417.94.202605112123-0 ≤
𝑥
< *
ADP
Red HatRed Hat OpenShift Container Platform 4.18
418.94.202605260517-0 ≤
𝑥
< *
ADP
Red HatRed Hat OpenShift Container Platform 4.19
4.19.9.6.202605201155-0 ≤
𝑥
< *
ADP
Red HatRHEL-8 based Middleware Containers
7.13.5-4.1777325677 ≤
𝑥
< *
ADP
Red HatRHEL-8 based Middleware Containers
7.13.5-4.1777325711 ≤
𝑥
< *
ADP
Red HatRHEL-8 based Middleware Containers
7.13.5-4.1777325710 ≤
𝑥
< *
ADP
Red HatRHEL-8 based Middleware Containers
7.13.5-3.1777325680 ≤
𝑥
< *
ADP
Red HatRHEL-8 based Middleware Containers
7.13.5-4.1777325709 ≤
𝑥
< *
ADP
Red HatRHEL-8 based Middleware Containers
7.13.5-4.1777325680 ≤
𝑥
< *
ADP
Red HatRHEL-8 based Middleware Containers
7.13.5-4.1777325708 ≤
𝑥
< *
ADP
Red HatRed Hat AI Inference Server 3.2
1779223654 ≤
𝑥
< *
ADP
Red HatRed Hat AI Inference Server 3.2
1779223651 ≤
𝑥
< *
ADP
Red HatRed Hat AI Inference Server 3.2
1780681984 ≤
𝑥
< *
ADP
Red HatRed Hat AI Inference Server 3.3
1778244559 ≤
𝑥
< *
ADP
Red HatRed Hat AI Inference Server 3.3
1778244531 ≤
𝑥
< *
ADP
Red HatRed Hat AI Inference Server 3.3
1778274666 ≤
𝑥
< *
ADP
Red HatRed Hat AI Inference Server 3.3
1778244546 ≤
𝑥
< *
ADP
Red HatRed Hat Discovery 2
1778101579 ≤
𝑥
< *
ADP
Red HatRed Hat Discovery 2
1778156756 ≤
𝑥
< *
ADP
Red HatRed Hat Hardened Images
1.68.1-1.hum1 ≤
𝑥
< *
ADP
Red HatRed Hat Insights proxy 1.5
1776868961 ≤
𝑥
< *
ADP
Red HatRed Hat Update Infrastructure 5
1776868774 ≤
𝑥
< *
ADP
Red HatRed Hat Update Infrastructure 5
1776868744 ≤
𝑥
< *
ADP
Red HatRed Hat Update Infrastructure 5
1776868772 ≤
𝑥
< *
ADP
Red HatRed Hat Update Infrastructure 5
1776868842 ≤
𝑥
< *
ADP
Red HatRed Hat Update Infrastructure 5
1777459441 ≤
𝑥
< *
ADP
Red HatRed Hat Update Infrastructure 5
1777454300 ≤
𝑥
< *
ADP
Red HatRed Hat Update Infrastructure 5
1777459504 ≤
𝑥
< *
ADP
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP
V3.1.6 ≤
𝑥
< *
ADP
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP
V3.1.6 ≤
𝑥
< *
ADP
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
V3.1.6 ≤
𝑥
< *
ADP
SiemensSIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
V3.1.6 ≤
𝑥
< *
ADP
SiemensSIPLUS S7-1500 CPU 1518-4 PN/DP MFP
V3.1.6 ≤
𝑥
< *
ADP
Debian logo
Debian Releases
Debian Product
Codename
nghttp2
bookworm
1.52.0-1+deb12u3
fixed
bookworm (security)
1.52.0-1+deb12u3
fixed
bullseye
vulnerable
bullseye (security)
1.43.0-1+deb11u3
fixed
forky
1.70.0-1
fixed
sid
1.70.0-1
fixed
trixie
1.64.0-1.1+deb13u1
fixed
trixie (security)
1.64.0-1.1+deb13u1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
nghttp2
bionic
Fixed 1.30.0-1ubuntu1+esm3
released
focal
Fixed 1.40.0-1ubuntu0.3+esm1
released
jammy
Fixed 1.43.0-1ubuntu0.3
released
noble
Fixed 1.59.0-1ubuntu0.3
released
questing
Fixed 1.64.0-1.1ubuntu1.1
released
resolute
Fixed 1.68.0-2ubuntu0.1
released
xenial
Fixed 1.7.1-1ubuntu0.1~esm3
released
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
libnghttp2-14
suse enterprise desktop 15 SP7
1.64.0-150700.3.3.1
fixed
suse enterprise sap 15 SP7
1.64.0-150700.3.3.1
fixed
suse enterprise server 12 SP5
1.39.2-3.23.1
fixed
suse enterprise server 15 SP4
1.40.0-150200.22.1
fixed
suse enterprise server 15 SP5
1.40.0-150200.22.1
fixed
suse enterprise server 15 SP6
1.40.0-150600.25.5.1
fixed
suse enterprise server 15 SP7
1.64.0-150700.3.3.1
fixed
libnghttp2-14-32bit
suse enterprise desktop 15 SP7
1.64.0-150700.3.3.1
fixed
suse enterprise sap 15 SP7
1.64.0-150700.3.3.1
fixed
suse enterprise server 12 SP5
1.39.2-3.23.1
fixed
suse enterprise server 15 SP4
1.40.0-150200.22.1
fixed
suse enterprise server 15 SP5
1.40.0-150200.22.1
fixed
suse enterprise server 15 SP6
1.40.0-150600.25.5.1
fixed
suse enterprise server 15 SP7
1.64.0-150700.3.3.1
fixed
libnghttp2-devel
suse enterprise desktop 15 SP7
1.64.0-150700.3.3.1
fixed
suse enterprise sap 15 SP7
1.64.0-150700.3.3.1
fixed
suse enterprise server 12 SP5
1.39.2-3.23.1
fixed
suse enterprise server 15 SP4
1.40.0-150200.22.1
fixed
suse enterprise server 15 SP5
1.40.0-150200.22.1
fixed
suse enterprise server 15 SP6
1.40.0-150600.25.5.1
fixed
suse enterprise server 15 SP7
1.64.0-150700.3.3.1
fixed
libnghttp2_asio-devel
suse enterprise desktop 15 SP7
1.40.0-150600.25.5.1
fixed
suse enterprise sap 15 SP7
1.40.0-150600.25.5.1
fixed
suse enterprise server 15 SP4
1.40.0-150200.22.1
fixed
suse enterprise server 15 SP5
1.40.0-150200.22.1
fixed
suse enterprise server 15 SP6
1.40.0-150600.25.5.1
fixed
suse enterprise server 15 SP7
1.40.0-150600.25.5.1
fixed
libnghttp2_asio1
suse enterprise desktop 15 SP7
1.40.0-150600.25.5.1
fixed
suse enterprise sap 15 SP7
1.40.0-150600.25.5.1
fixed
suse enterprise server 15 SP4
1.40.0-150200.22.1
fixed
suse enterprise server 15 SP5
1.40.0-150200.22.1
fixed
suse enterprise server 15 SP6
1.40.0-150600.25.5.1
fixed
suse enterprise server 15 SP7
1.40.0-150600.25.5.1
fixed
nodejs22
suse enterprise sap 15 SP7
22.23.0-150700.3.12.1
fixed
suse enterprise server 15 SP6
22.23.0-150600.13.18.1
fixed
suse enterprise server 15 SP7
22.23.0-150700.3.12.1
fixed
nodejs22-devel
suse enterprise sap 15 SP7
22.23.0-150700.3.12.1
fixed
suse enterprise server 15 SP6
22.23.0-150600.13.18.1
fixed
suse enterprise server 15 SP7
22.23.0-150700.3.12.1
fixed
nodejs22-docs
suse enterprise sap 15 SP7
22.23.0-150700.3.12.1
fixed
suse enterprise server 15 SP6
22.23.0-150600.13.18.1
fixed
suse enterprise server 15 SP7
22.23.0-150700.3.12.1
fixed
nodejs24
suse enterprise sap 15 SP7
24.17.0-150700.15.11.1
fixed
suse enterprise server 15 SP7
24.17.0-150700.15.11.1
fixed
nodejs24-devel
suse enterprise sap 15 SP7
24.17.0-150700.15.11.1
fixed
suse enterprise server 15 SP7
24.17.0-150700.15.11.1
fixed
nodejs24-docs
suse enterprise sap 15 SP7
24.17.0-150700.15.11.1
fixed
suse enterprise server 15 SP7
24.17.0-150700.15.11.1
fixed
npm22
suse enterprise sap 15 SP7
22.23.0-150700.3.12.1
fixed
suse enterprise server 15 SP6
22.23.0-150600.13.18.1
fixed
suse enterprise server 15 SP7
22.23.0-150700.3.12.1
fixed
npm24
suse enterprise sap 15 SP7
24.17.0-150700.15.11.1
fixed
suse enterprise server 15 SP7
24.17.0-150700.15.11.1
fixed
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
libnghttp2
RHEL 8
0:1.33.0-6.el8_10.2
fixed
RHEL 9
0:1.43.0-6.el9_7.1
fixed
libnghttp2-devel
RHEL 8
0:1.33.0-6.el8_10.2
fixed
RHEL 9
0:1.43.0-6.el9_7.1
fixed
nghttp2
RHEL 8
0:1.33.0-6.el8_10.2
fixed
RHEL 9
0:1.43.0-6.el9_7.1
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
libnghttp2
Amazon Linux 2
0:1.41.0-1.amzn2.0.6
fixed
Amazon Linux 2023
0:1.59.0-3.amzn2023.0.2
fixed
libnghttp2-debuginfo
Amazon Linux 2023
0:1.59.0-3.amzn2023.0.2
fixed
libnghttp2-devel
Amazon Linux 2
0:1.41.0-1.amzn2.0.6
fixed
Amazon Linux 2023
0:1.59.0-3.amzn2023.0.2
fixed
nghttp2
Amazon Linux 2
0:1.41.0-1.amzn2.0.6
fixed
Amazon Linux 2023
0:1.59.0-3.amzn2023.0.2
fixed
nghttp2-debuginfo
Amazon Linux 2
0:1.41.0-1.amzn2.0.6
fixed
Amazon Linux 2023
0:1.59.0-3.amzn2023.0.2
fixed
nghttp2-debugsource
Amazon Linux 2023
0:1.59.0-3.amzn2023.0.2
fixed
nodejs22
Amazon Linux 2023
1:22.22.2-1.amzn2023.0.3
fixed
nodejs22-debuginfo
Amazon Linux 2023
1:22.22.2-1.amzn2023.0.3
fixed
nodejs22-debugsource
Amazon Linux 2023
1:22.22.2-1.amzn2023.0.3
fixed
nodejs22-devel
Amazon Linux 2023
1:22.22.2-1.amzn2023.0.3
fixed
nodejs22-docs
Amazon Linux 2023
1:22.22.2-1.amzn2023.0.3
fixed
nodejs22-full-i18n
Amazon Linux 2023
1:22.22.2-1.amzn2023.0.3
fixed
nodejs22-libs
Amazon Linux 2023
1:22.22.2-1.amzn2023.0.3
fixed
nodejs22-libs-debuginfo
Amazon Linux 2023
1:22.22.2-1.amzn2023.0.3
fixed
nodejs22-npm
Amazon Linux 2023
1:10.9.7-1.22.22.2.1.amzn2023.0.3
fixed
nodejs24
Amazon Linux 2023
1:24.15.0-1.amzn2023.0.2
fixed
nodejs24-debuginfo
Amazon Linux 2023
1:24.15.0-1.amzn2023.0.2
fixed
nodejs24-debugsource
Amazon Linux 2023
1:24.15.0-1.amzn2023.0.2
fixed
nodejs24-devel
Amazon Linux 2023
1:24.15.0-1.amzn2023.0.2
fixed
nodejs24-docs
Amazon Linux 2023
1:24.15.0-1.amzn2023.0.2
fixed
nodejs24-full-i18n
Amazon Linux 2023
1:24.15.0-1.amzn2023.0.2
fixed
nodejs24-libs
Amazon Linux 2023
1:24.15.0-1.amzn2023.0.2
fixed
nodejs24-libs-debuginfo
Amazon Linux 2023
1:24.15.0-1.amzn2023.0.2
fixed
nodejs24-npm
Amazon Linux 2023
1:11.12.1-1.24.15.0.1.amzn2023.0.2
fixed
v8-12.4-devel
Amazon Linux 2023
3:12.4.254.21-1.22.22.2.1.amzn2023.0.3
fixed
v8-13.6-devel
Amazon Linux 2023
3:13.6.233.17-1.24.15.0.1.amzn2023.0.2
fixed
Azure Linux logo
Azure Linux Releases
Azure Package
Release
cmake
Azure Linux 3.0
0:3.30.3-13.azl3
fixed
CBL-Mariner 2.0
0:3.21.4-23.cm2
fixed
nghttp2
Azure Linux 3.0
0:1.61.0-3.azl3
fixed
CBL-Mariner 2.0
0:1.57.0-3.cm2
fixed
nodejs
Azure Linux 3.0
0:20.14.0-14.azl3
fixed
nodejs18
CBL-Mariner 2.0
0:18.20.3-12.cm2
fixed
Common Weakness Enumeration
References
https://github.com/nghttp2/nghttp2/commit/5c7df8fa815ac1004d9ecb9d1f7595c4d37f46e1
https://github.com/nghttp2/nghttp2/security/advisories/GHSA-6933-cjhr-5qg6
http://www.openwall.com/lists/oss-security/2026/03/20/3
https://lists.debian.org/debian-lts-announce/2026/05/msg00025.html
https://access.redhat.com/errata/RHSA-2026:10065
https://access.redhat.com/errata/RHSA-2026:11768
https://access.redhat.com/errata/RHSA-2026:13812
https://access.redhat.com/errata/RHSA-2026:14773
https://access.redhat.com/errata/RHSA-2026:14937
https://access.redhat.com/errata/RHSA-2026:15087
https://access.redhat.com/errata/RHSA-2026:16008
https://access.redhat.com/errata/RHSA-2026:16009
https://access.redhat.com/errata/RHSA-2026:16030
https://access.redhat.com/errata/RHSA-2026:16174
https://access.redhat.com/errata/RHSA-2026:17596
https://access.redhat.com/errata/RHSA-2026:19724
https://access.redhat.com/errata/RHSA-2026:19725
https://access.redhat.com/errata/RHSA-2026:20040
https://access.redhat.com/errata/RHSA-2026:20087
https://access.redhat.com/errata/RHSA-2026:21656
https://access.redhat.com/errata/RHSA-2026:21690
https://access.redhat.com/errata/RHSA-2026:21695
https://access.redhat.com/errata/RHSA-2026:25096
https://access.redhat.com/errata/RHSA-2026:27200
https://access.redhat.com/errata/RHSA-2026:27201
https://access.redhat.com/errata/RHSA-2026:6190
https://access.redhat.com/errata/RHSA-2026:7080
https://access.redhat.com/errata/RHSA-2026:7123
https://access.redhat.com/errata/RHSA-2026:7302
https://access.redhat.com/errata/RHSA-2026:7310
https://access.redhat.com/errata/RHSA-2026:7350
https://access.redhat.com/errata/RHSA-2026:7666
https://access.redhat.com/errata/RHSA-2026:7667
https://access.redhat.com/errata/RHSA-2026:7668
https://access.redhat.com/errata/RHSA-2026:7670
https://access.redhat.com/errata/RHSA-2026:7675
https://access.redhat.com/errata/RHSA-2026:7896
https://access.redhat.com/errata/RHSA-2026:7983
https://access.redhat.com/errata/RHSA-2026:8339
https://access.redhat.com/errata/RHSA-2026:8538
https://access.redhat.com/errata/RHSA-2026:8539
https://access.redhat.com/errata/RHSA-2026:8540
https://access.redhat.com/errata/RHSA-2026:8541
https://access.redhat.com/errata/RHSA-2026:8545
https://access.redhat.com/errata/RHSA-2026:8546
https://access.redhat.com/errata/RHSA-2026:8547
https://access.redhat.com/errata/RHSA-2026:8548
https://access.redhat.com/errata/RHSA-2026:8868
https://access.redhat.com/errata/RHSA-2026:9711
https://access.redhat.com/errata/RHSA-2026:9832
https://access.redhat.com/errata/RHSA-2026:9874
https://access.redhat.com/security/cve/CVE-2026-27135
https://bugzilla.redhat.com/show_bug.cgi?id=2448754
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27135.json