DEBIAN-CVE-2026-91767

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Source
https://security-tracker.debian.org/tracker/CVE-2026-91767
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-91767.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-91767
Upstream
  • CVE-2026-91767
Published
2026-09-25T21:17:24Z
Modified
2026-10-11T17:01:19Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

php_openssl_matches_wildcard_name() in ext/openssl/xp_ssl.c underflows the length argument passed to memchr() when a TLS server certificate presents a wildcard name whose literal characters are together longer than the hostname being verified. A malicious server presenting such a certificate makes the PHP client read up to SIZE_MAX bytes past the end of a heap allocation. The path is reachable from any default client stream, because verify_peer_name is enabled by default.

References

Affected packages

Debian:12 / php8.2

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
8.2.34-1~deb12u1

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
8.2.29-1~deb12u1
8.2.30-1~deb12u1
8.2.31-1~deb12u1
8.2.32-1~deb12u1
8.2.33-1~deb12u1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-91767.json"

Debian:13 / php8.4

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
8.4.26-1~deb13u1

Affected versions

8.*
8.4.11-1
8.4.16-1~deb13u1
8.4.16-1
8.4.20-1
8.4.21-1~deb13u1
8.4.21-1
8.4.22-1
8.4.23-1~deb13u1
8.4.23-1
8.4.24-1~deb13u1
8.4.24-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-91767.json"

Debian:14 / php8.4

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
8.4.26-1

Affected versions

8.*
8.4.11-1
8.4.16-1~deb13u1
8.4.16-1
8.4.20-1
8.4.21-1~deb13u1
8.4.21-1
8.4.22-1
8.4.23-1~deb13u1
8.4.23-1
8.4.24-1~deb13u1
8.4.24-1
8.4.26-1~deb13u1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-91767.json"