CVE-2025-6491

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-6491
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-6491.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-6491
Downstream
Related
Published
2025-07-13T22:15:23Z
Modified
2025-07-15T14:50:04.189184Z
Summary
[none]
Details

In PHP versions:8.1.* before 8.1.33, 8.2.* before 8.2.29, 8.3.* before 8.3.23, 8.4.* before 8.4.10 when parsing XML data in SOAP extensions, overly large (>2Gb) XML namespace prefix may lead to null pointer dereference. This may lead to crashes and affect the availability of the target server.

References

Affected packages

Debian:11 / php7.4

Package

Name
php7.4
Purl
pkg:deb/debian/php7.4?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

7.*

7.4.21-1+deb11u1
7.4.25-1+deb11u1
7.4.26-1
7.4.28-1+deb11u1
7.4.30-1+deb11u1
7.4.33-1+deb11u1
7.4.33-1+deb11u3
7.4.33-1+deb11u4
7.4.33-1+deb11u5
7.4.33-1+deb11u6
7.4.33-1+deb11u7
7.4.33-1+deb11u8

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / php8.2

Package

Name
php8.2
Purl
pkg:deb/debian/php8.2?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

8.*

8.2.5-2
8.2.7-1~deb12u1
8.2.7-1
8.2.7-1.1
8.2.7-1.2
8.2.10-1
8.2.10-2
8.2.12-1
8.2.16-1
8.2.16-2
8.2.17-1
8.2.18-1~deb12u1
8.2.18-1
8.2.20-1~deb12u1
8.2.20-2
8.2.20-3
8.2.21-1
8.2.23-1
8.2.24-1~deb12u1
8.2.24-1
8.2.26-1~deb12u1
8.2.26-4
8.2.27-1
8.2.28-1~deb12u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / php8.4

Package

Name
php8.4
Purl
pkg:deb/debian/php8.4?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.4.10-1

Affected versions

8.*

8.4.0~alpha1-1
8.4.0~alpha4-1
8.4.0~beta3-1
8.4.0~beta4-1
8.4.0~beta5-1
8.4.0~rc1-1
8.4.0~rc4-1
8.4.1-4
8.4.1-5
8.4.1-6
8.4.2-1
8.4.3-1
8.4.4-1
8.4.4-1.1
8.4.5-1
8.4.6-1
8.4.6-2
8.4.8-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Git / github.com/php/php-src

Affected ranges

Type
GIT
Repo
https://github.com/php/php-src
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
1996831969293a866863f7148f5416e99ea123cb