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TI-2026-83820 Aliases CVE-2026-120428GHSA-7h72-q9rr-77j7

Stored cross-site scripting in PandaWiki via static file uploads

Priority MEDIUM 56CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Active
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

Chaitin PandaWiki from 3.65.0 through 3.87.5 contains a stored cross-site scripting flaw (CWE-79). The file upload accepts HTML files with image extensions, so the stored script can run when the file is served in a browser. An unauthenticated attacker can upload such a file and lure an administrator to a crafted link, where the script can steal the session token and take over the session. A public exploit is linked in the references.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

PandaWiki 3.65.0 through 3.87.5 contains a stored cross-site scripting vulnerability that allows unauthenticated attackers to upload HTML files with image extensions via /share/v1/common/file/upload. Attackers can lure administrators to /static-file/<key>?a=.pdf, bypassing the nginx attachment header to serve HTML inline and steal the panda_wiki_token JWT for session takeover.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00359 29th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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
ChaitinPandaWiki3.65.0 – 3.87.5—No fix listedCNA
  • PandaWiki VendorChaitin Affected 3.65.0 – 3.87.5 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for PandaWiki.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Timeline

  1. 2026-11-02 Threatist record created from CVE-2026-120428
  2. 2026-11-02 Alias added: GHSA-7h72-q9rr-77j7
  3. 2026-11-02 CISA SSVC decision points changed
  4. 2026-11-02 Priority changed: LOW → MEDIUM

References

Exploit 1

Other 4

  • TI-2026-62495 SafeLine through 9.4.1 Authentication Bypass via Weak Session Secret CVSS 4.0CRITICAL 9.2

Sources

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