Read the docs
TI-2026-81574 Aliases CVE-2026-58205

Reflected cross-site scripting in JeromeDevome GRR

Priority LOW 35CWE-79Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

JeromeDevome GRR before 4.5.0 is affected. The maj.php file reflects the forcemaj parameter without adequate escaping while installation files remain accessible, which is cross-site scripting (CWE-79). A remote attacker can craft a URL that runs arbitrary JavaScript in a victim's browser when the victim opens it. Because the authentication cookie lacks the HttpOnly flag, this can enable cookie theft and session hijacking.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

GRR is a resource management and reservation application. Prior to version 4.5.0, `maj.php` reflects the `forcemaj` parameter without adequate escaping when installation files remain accessible. Removal of these files is not automatic. An attacker can craft a URL that executes arbitrary JavaScript in a victim's browser when the victim accesses it. This reflected cross-site scripting can enable phishing, redirection to malicious sites, cookie theft and session hijacking because the authentication cookie is not `HttpOnly`. This issue is fixed in version 4.5.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00287 21st percentileScored 2026-11-07
Fix Fixed GRR (JeromeDevome): 4.5.0

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
JeromeDevomeGRRbefore 4.5.04.5.0Patch availableCNA
  • GRR VendorJeromeDevome Affected before 4.5.0 Fixed in 4.5.0 Patch available CNA

Remediation

Upgrade GRR to version 4.5.0, which fixes this issue.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA GRR (JeromeDevome) Fixed in 4.5.0

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-58205
  2. 2026-10-28 Priority changed: MEDIUM → LOW
  3. 2026-10-29 CISA SSVC decision points changed

References

Other 3

  • TI-2026-81576 PHP code injection in GRR allows remote code execution CVSS 3.1CRITICAL 9.1
  • TI-2026-81577 Arbitrary file read and deletion in GRR via database restoration CVSS 3.1HIGH 7.2

Sources

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