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CVE-2024-2756

41
FAUCET Score

CVE-2024-2756 is a medium-severity vulnerability (CVSS 6.5) in PHP applications, stemming from an incomplete fix for CVE-2022-31629. It allows network and same-site attackers to manipulate cookie handling, enabling an insecure cookie to be treated as a secure __Host- or __Secure- cookie. The attack requires user interaction (UI:R) and has a high impact on integrity (I:H), potentially leading to unauthorized data modification. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion, indicating a low immediate threat.

Impacted Technologies

VendorProductVersion(s)CPE
PHP GroupPHP
>= 8.1.*, < 8.1.28, >= 8.2.*, < 8.2.18, >= 8.3.*, < 8.3.5CNA affecteddefault affected

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
37.86%
Probability of exploitation in next 30 days
EPSS Percentile
98.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.3786 is in the 99th percentile among its peer group of 26,221 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (16)

microsoftpatch availablevia msrc
Product: 17355-16823Fixed in: 8.1.28-1
microsoftpatch availablevia msrc
Product: 20014-17086Fixed in: 8.1.28-1
microsoftpatch availablevia msrc
Product: 17613-17084Fixed in: 8.3.14-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 8.1.28-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 8.1.28-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 ARMFixed in: 8.3.14-1
microsoftpatch availablevia msrc
Product: cbl2 php 8.1.28-1 on CBL Mariner 2.0Fixed in: 8.1.28-1
microsoftpatch availablevia msrc
Product: cbl2 php 8.1.22-2 on CBL Mariner 2.0Fixed in: 8.1.28-1
microsoftpatch availablevia msrc
Product: azl3 php 8.3.12-1 on Azure Linux 3.0Fixed in: 8.3.14-1
microsoftpatch availablevia msrc
Product: Azure Linux 3.0 x64Fixed in: 8.3.14-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: php:8.2-8100020241112130045.f7998665
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: php:7.4-8100020241113075828.f7998665
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: php:8.2-9050020241112094217.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: php:8.1-9050020241112144108.9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: php-0:8.0.30-2.el9
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: php:8.0/php

Vendor Advisories (3)

microsoft2024-Dec/CVE-2024-2756

CVE-2024-2756

Dec 10, 2024
redhatCVE-2024-2756Moderate

php: host/secure cookie bypass due to partial CVE-2022-31629 fix

Apr 12, 2024
microsoft2024-Apr/CVE-2024-2756Moderate

__Host-/__Secure- cookie bypass due to partial CVE-2022-31629 fix

Apr 9, 2024

References

lists.fedoraproject.org / archives/list/[email protected]/message/KJZK3X6B7FBE32FETDSMRLJXTFTHKWSY
lists.fedoraproject.org / archives/list/[email protected]/message/ZGWIK3HMBACERGB4TSBB2JUOMPYY2VKY
github.com / php/php-src/security/advisories/GHSA-wpj3-hf5j-x4v4
lists.debian.org / debian-lts-announce/2024/05/msg00005.html
security.netapp.com / advisory/ntap-20240510-0008
openwall.com / lists/oss-security/2024/04/12/11