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TI-2026-71989 Aliases CVE-2026-110103GHSA-rm26-pxjp-76q3

Stored cross-site scripting in bbs-go via spoofed upload Content-Type

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
No fix listed

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

Summary

bbs-go through 4.4.6 contains a stored cross-site scripting flaw (CWE-79) in its upload endpoint POST /api/upload. Spoofing the multipart Content-Type lets files containing HTML or SVG be stored and served inline from /res. An authenticated user can send these file URLs to administrators, whose browsers then run the script on the forum's origin.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

bbs-go through 4.4.6 contains a stored cross-site scripting vulnerability that allows authenticated users to upload HTML or SVG files by spoofing the multipart Content-Type in POST /api/upload. Attackers can upload script-bearing documents served inline from /res and send their URLs to administrators, executing script on the forum's origin.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00226 13th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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
mlogclubbbs-goup to 4.4.6—No fix listedCNA
  • bbs-go Vendormlogclub Affected up to 4.4.6 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for bbs-go.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-110103
  2. 2026-10-13 Alias added: GHSA-rm26-pxjp-76q3
  3. 2026-10-14 CISA SSVC decision points changed
  4. 2026-11-06 Affected versions changed · Red Hat
  5. 2026-11-06 CVSS score added · Red Hat

References

Patch 2

Other 3

  • TI-2026-75425 bbs-go Account Takeover via Google One Tap Login CVSS 4.0HIGH 8.6
  • TI-2026-84345 Improper TLS certificate validation in bbs-go SMTP email service CVSS 4.0HIGH 8.3
  • TI-2026-65682 bbs-go through 4.4.6 Incorrect Authorization via /api/admin/user/synccount CVSS 4.0MEDIUM 5.3

Sources

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