PHP up to 8.2.31/8.3.31/8.4.22/8.5.7 AES-WRAP-PAD Algorithm implementation heap-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in PHP up to 8.2.31/8.3.31/8.4.22/8.5.7. This affects an unknown function of the component AES-WRAP-PAD Algorithm implementation. The manipulation leads to heap-based overflow. This vulnerability is referenced as CVE-2026-14355. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in PHP up to 8.2.31/8.3.31/8.4.22/8.5.7. This issue affects some unknown functionality of the component AES-WRAP-PAD Algorithm implementation. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In PHP versions 8.2.* before 8.2.32, 8.3.* before 8.3.32, 8.4.* before 8.4.23, 8.5.* before 8.5.8, the AES-WRAP-PAD algorithm implementation in OpenSSL extension contains a buffer allocation flaw. The output buffer for the AES key-wrap-with-padding operation is sized from the plaintext length without accounting for RFC 5649 expansion. This may cause OpenSSL to write beyond allocated memory, corrupting heap metadata and triggering application abort.

The weakness was published by Oleg Baturin as GHSA-7jrw-539f-x6vr. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-14355 since 07/01/2026. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/06/2026).

The vulnerability scanner Nessus provides a plugin with the ID 325144 (Debian dla-4669 : libapache2-mod-php8.2 - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 8.2.32, 8.3.32, 8.4.23 or 8.5.8 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (325144) and EUVD (EUVD-2026-41609). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.6
CNA Vector (php): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 325144
Nessus Name: Debian dla-4669 : libapache2-mod-php8.2 - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: PHP 8.2.32/8.3.32/8.4.23/8.5.8

Timelineinfo

07/01/2026 CVE reserved
07/04/2026 +3 days Advisory disclosed
07/04/2026 +0 days VulDB entry created
07/06/2026 +2 days VulDB entry last update

Sourcesinfo

Product: php.org

Advisory: GHSA-7jrw-539f-x6vr
Researcher: Oleg Baturin
Status: Confirmed

CVE: CVE-2026-14355 (🔒)
GCVE (CVE): GCVE-0-2026-14355
GCVE (VulDB): GCVE-100-376175
EUVD: 🔒

Entryinfo

Created: 07/04/2026 05:35
Updated: 07/06/2026 20:12
Changes: 07/04/2026 05:35 (66), 07/04/2026 19:52 (1), 07/06/2026 20:12 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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