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TI-2026-30323 Aliases CVE-2026-41921GHSA-w5c5-88rv-x3v2

Koha Stored XSS via Purchase Suggestion Handler

Priority LOW 23CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
None · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Koha before 26.05.02, 25.11.07, and 25.05.13 contains a stored cross-site scripting vulnerability in the purchase suggestion handler that allows authenticated staff users to inject malicious scripts by submitting unsanitized input through the suggestion save operation. Attackers can supply crafted HTML or script content in fields such as title, author, isbn, publishercode, place, collectiontitle, itemtype, and note, which are stored without sanitization and later rendered in the suggestion list template, causing injected scripts to execute in the browser of any staff user who views the suggestions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00298 22nd percentileScored 2026-11-07
Fix Fixed Koha (Koha Community): 26.05.02, 25.11.07, 25.05.13

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Koha CommunityKoha26.05.0 to before 26.05.02; 25.11.0 to before 25.11.07; 25.05.0 to before 25.05.1326.05.02, 25.11.07, 25.05.13Patch availableCNA
  • Koha VendorKoha Community Affected 26.05.0 to before 26.05.02; 25.11.0 to before 25.11.07; 25.05.0 to before 25.05.13 Fixed in 26.05.02, 25.11.07, 25.05.13 Patch available CNA

Remediation

  • Fix · CNA Koha (Koha Community) Fixed in 26.05.02, 25.11.07, 25.05.13

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41921
  2. 2026-10-03 Alias added: GHSA-w5c5-88rv-x3v2

References

Other 3

  • TI-2026-73826 OS command injection in Koha Task Scheduler deletion via jobid CVSS 3.1HIGH 8.8
  • TI-2026-24397 Authenticated SQL Injection in Koha displayby parameter of suggestion.pl CVSS 4.0HIGH 8.7
  • TI-2023-24038 SQL Injection vulnerability in Koha Library Software 23.0.5.04 and before allows a remote… CVSS 3.1HIGH 7.5
  • TI-2023-24039 File Upload vulnerability in Koha Library Software 23.05.04 and before allows a remote… CVSS 3.1MEDIUM 5.3
  • TI-2026-05641 Koha SQL Injection in reports/catalogue_out.pl via Filter URL Parameter CVSS 4.0MEDIUM 5.6
  • TI-2026-49955 Koha SQL Injection via order_by and {order}_ovalue Parameters in guided_reports.pl CVSS 3.1HIGH 8.8
See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences