CVE catalog
CVE-2026-8503
Apache::Session::Generate::SHA256 versions before 1.3.19 for Perl create insecure session ids. Apache::Session::Generate::SHA256 generated session ids insecurely. The default session id generator ret
- Severity
- High · CVSS 7.4
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.24% · Oct 25, 2026
Apache::Session::Generate::SHA256 versions before 1.3.19 for Perl create insecure session ids. Apache::Session::Generate::SHA256 generated session ids insecurely. The default session id generator returns a SHA-256 hash of the built-in rand() function, the epoch time, and the PID, that is hashed again. These are predictable, low-entropy sources. Predicable session ids could allow an attacker to gain access to systems. Note that version 1.3.19 has a fallback without warning to use insecure session generation method if the call to Crypt::URandom::urandom fails. However, this is unlikely as Crypt::URandom is a hardcoded requirement of the module. This issue is similar to CVE-2025-40931 for Apache::Session::Generate::MD5.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libapache-session-browseable-perl | sid | 1.3.19-1 | fixed |
| Debian | libapache-session-browseable-perl | forky | 1.3.19-1 | fixed |
| Debian | libapache-session-browseable-perl | trixie | 1.3.16-1+deb13u1 | fixed |
| Debian | libapache-session-browseable-perl | bookworm | 1.3.11-3+deb12u1 | fixed |
| Cpe | apache\ | Not reported | 1.3.19 | fixed |
| Cpe | apache\ | Not reported | 1.3.19 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libapache-session-browseable-perl | source | sid | 1.3.19-1 | not yet assigned | Not reported | Not reported |
| Debian | libapache-session-browseable-perl | source | forky | 1.3.19-1 | not yet assigned | Not reported | Not reported |
| Debian | libapache-session-browseable-perl | source | trixie | 1.3.16-1+deb13u1 | not yet assigned | Not reported | Not reported |
| Debian | libapache-session-browseable-perl | source | bookworm | 1.3.11-3+deb12u1 | not yet assigned | Not reported | Not reported |
| Cpe | apache\ | cpe | Not reported | 1.3.19 | Not reported | Not reported | Not reported |
| Cpe | apache\ | cpe | Not reported | 1.3.19 | Not reported | NVD-CVE-2026-8503 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
Details (4)
1.3.11-3+deb12u1· all · bookwormFixed · Fixed:
1.3.11-3+deb12u1nvd · libapache-session-browseable-perl · debian · bookworm; nvd · libapache-session-browseable-perl · debian · 12
1.3.11-3+deb12u1· all · bookwormFixed · Fixed:
1.3.11-3+deb12u1nvd · libapache-session-browseable-perl · debian · bookworm; nvd · libapache-session-browseable-perl · debian · 12
1.3.16-1~bpo12+1· all · bookworm-backportsFixed · Fixed:
1.3.11-3+deb12u1nvd · libapache-session-browseable-perl · debian · bookworm; nvd · libapache-session-browseable-perl · debian · 12
1.3.16-1~bpo12+1· all · bookworm-backportsFixed · Fixed:
1.3.11-3+deb12u1nvd · libapache-session-browseable-perl · debian · bookworm; nvd · libapache-session-browseable-perl · debian · 12
[Debian 13 (Trixie)]
Details (2)
1.3.16-1+deb13u1· all · trixieFixed · Fixed:
1.3.16-1+deb13u1nvd · libapache-session-browseable-perl · debian · 13
1.3.16-1+deb13u1· all · trixieFixed · Fixed:
1.3.16-1+deb13u1nvd · libapache-session-browseable-perl · debian · 13
Observed:
References
- [https://github.com/LemonLDAPNG/Apache-Session-Browseable/commit/cc915cbbd266776eec3dd8bf4748b15fa827dbd0.patch]
- [https://metacpan.org/release/GUIMARD/Apache-Session-Browseable-1.3.19/changes]
- [https://metacpan.org/release/GUIMARD/Apache-Session-Browseable-1.3.19/diff/GUIMARD/Apache-Session-Browseable-1.3.18#lib/Apache/Session/Generate/SHA256.pm]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-8503]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-8503]
- [https://security-tracker.debian.org/tracker/CVE-2026-8503]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8503.json]
- [https://www.cve.org/CVERecord?id=CVE-2025-40931]
- [https://www.cve.org/CVERecord?id=CVE-2025-40932]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]