CVE-2020-36326

EUVD-2021-1129
PHPMailer 6.1.8 through 6.4.0 allows object injection through Phar Deserialization via addAttachment with a UNC pathname. NOTE: this is similar to CVE-2018-19296, but arose because 6.1.8 fixed a functionality problem in which UNC pathnames were always considered unreadable by PHPMailer, even in safe contexts. As an unintended side effect, this fix eliminated the code that blocked addAttachment exploitation.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 72%
Affected Products (NVD)
VendorProductVersion
phpmailer_projectphpmailer
6.1.8 ≤
𝑥
≤ 6.4.0
wordpresswordpress
3.7 ≤
𝑥
< 3.7.36
wordpresswordpress
3.8 ≤
𝑥
< 3.8.36
wordpresswordpress
3.9 ≤
𝑥
< 3.9.34
wordpresswordpress
4.0 ≤
𝑥
< 4.0.33
wordpresswordpress
4.1 ≤
𝑥
< 4.1.33
wordpresswordpress
4.2 ≤
𝑥
< 4.2.30
wordpresswordpress
4.3 ≤
𝑥
< 4.3.26
wordpresswordpress
4.4 ≤
𝑥
< 4.4.25
wordpresswordpress
4.5 ≤
𝑥
< 4.5.24
wordpresswordpress
4.6 ≤
𝑥
< 4.6.21
wordpresswordpress
4.7 ≤
𝑥
< 4.7.21
wordpresswordpress
4.8 ≤
𝑥
< 4.8.17
wordpresswordpress
4.9 ≤
𝑥
< 4.9.18
wordpresswordpress
5.0 ≤
𝑥
< 5.0.13
wordpresswordpress
5.1 ≤
𝑥
< 5.1.10
wordpresswordpress
5.2 ≤
𝑥
< 5.2.11
wordpresswordpress
5.3 ≤
𝑥
< 5.3.8
wordpresswordpress
5.4 ≤
𝑥
< 5.4.6
wordpresswordpress
5.5 ≤
𝑥
< 5.5.5
wordpresswordpress
5.6 ≤
𝑥
< 5.6.4
wordpresswordpress
5.7 ≤
𝑥
< 5.7.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
libphp-phpmailer
bookworm
6.6.3-1
fixed
bullseye
6.2.0-2
fixed
buster
not-affected
sid
6.9.1-1
fixed
stretch
not-affected
trixie
6.9.1-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
libphp-phpmailer
bionic
not-affected
focal
not-affected
groovy
ignored
hirsute
ignored
impish
ignored
jammy
not-affected
kinetic
not-affected
lunar
not-affected
trusty
dne
xenial
not-affected