Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
n/a n/a — Koha versions up to 25.11 contain a Server-Side Request Forgery (SSRF) vulnerability via the Z39.50/SRU server configuration.
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N U L L N 6.5 .0024 15.7 —
AFFECTED
Product Versions Fixed
n/a n/a – —
TIMELINE
Feb 16 Reserved by mitre
Jun 3 EXPLOIT PUBLISHED — CVE-2026-26379. Public exploit reference added.
Jun 3 Published (CNA: mitre)
Description
Koha versions up to 25.11 contain a Server-Side Request Forgery (SSRF) vulnerability via the Z39.50/SRU server configuration. This allows authenticated attackers to perform internal network scanning and identify running services by analyzing server response times.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| February 16, 2026 | Reserved | Reserved by mitre |
| June 3, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-26379. Public exploit reference added. |
| June 3, 2026 | Published | Published (CNA: mitre) |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| n/a | n/a | — | n/a | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-26379 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.