CVE-2022-31629 | $_COOKIE names string replacement (. -> _): cookie integrity vulnerabilities

Exp

In PHP versions before 7.4.31, 8.0.24 and 8.1.11, the vulnerability enables network and same-site attackers to set a standard insecure cookie in the victim's browser which is treated as a `__Host-` or `__Secure-` cookie by PHP applications.

Published: 2022-09-28 Last update: 2025-11-04 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-31629 is rated High Exploit Risk (72.5/100): CVSS Medium severity, with high exploitation likelihood (EPSS 15.42%, 95th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2022-31629

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2022-31629

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-07 16.95% 15.42% -1.53%
2 2026-03-04 12.82% 16.95% +4.13%
3 2026-03-01 — 12.82% —

Full EPSS history (69 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-31629

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2022-31629

OS Trackers for CVE-2022-31629

vendor priority summary link
alpine — CVE-2022-31629: 2 source package rows (php8, php81); 5 state rows across 4 repos (3.17-community, 3.18-community, 3.19-community, edge-community); fixed 5, open 0. https://security.alpinelinux.org/vuln/CVE-2022-31629
debian not yet assigned CVE-2022-31629 not yet assigned priority: Debian including 1 source packages (php7.4), 1 status rows across 1 suites (bullseye): resolved 1. https://security-tracker.debian.org/tracker/CVE-2022-31629
gentoo normal CVE-2022-31629: 1 GLSA(s) (202211-03), 1 atom(s) (dev-lang/php); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-31629
redhat medium — https://access.redhat.com/security/cve/CVE-2022-31629
ubuntu medium CVE-2022-31629 medium priority: Ubuntu including 5 source packages (php5, php7.0, php7.2, php7.4, php8.1), 37 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 25, released 7, needs-triage 4, needed 1. https://ubuntu.com/security/CVE-2022-31629

Affected software / configurations for CVE-2022-31629

Vendor Product Version Raw CPE
php php < 7.4.31 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
php php >= 8.0.0, < 8.0.24 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
php php >= 8.1.0, < 8.1.11 cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
fedoraproject fedora 35 cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
fedoraproject fedora 36 cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
fedoraproject fedora 37 cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
debian debian_linux 11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

References for CVE-2022-31629

URL Tags
http://www.openwall.com/lists/oss-security/2024/04/12/11
https://bugs.php.net/bug.php?id=81727 Exploit Permissions Required Vendor Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00030.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2L5SUVYGAKSWODUQPZFBUB3AL6E6CSEV/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJZK3X6B7FBE32FETDSMRLJXTFTHKWSY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSJVPJTX7T3J5V7XHR4MFNHZGP44R5XE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VI3E6A3ZTH2RP7OMLJHSVFIEQBIFM6RF/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XNIEABBH5XCXLFWWZYIDE457SPEDZTXV/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZGWIK3HMBACERGB4TSBB2JUOMPYY2VKY/
https://security.gentoo.org/glsa/202211-03 Third Party Advisory
https://security.netapp.com/advisory/ntap-20221209-0001/ Third Party Advisory
https://www.debian.org/security/2022/dsa-5277 Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/KJZK3X6B7FBE32FETDSMRLJXTFTHKWSY/
https://lists.fedoraproject.org/archives/list/[email protected]/message/ZGWIK3HMBACERGB4TSBB2JUOMPYY2VKY/
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