Stored cross-site scripting in wallabag via failed HTML import upload
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
wallabag 2.6.13 through 2.6.14 contains a stored cross-site scripting flaw (CWE-79) in its import feature. An authenticated user can trigger a failed Pocket HTML, Pocket CSV or Shaarli import and leave an uploaded HTML file containing script at a predictable path, which runs in victims' wallabag sessions.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
wallabag 2.6.13 through 2.6.14 contains a stored cross-site scripting vulnerability that allows authenticated users to host arbitrary HTML by triggering a failed Pocket HTML, Pocket CSV or Shaarli import. Attackers can upload an HTML file with script but no anchor elements, leaving it at the predictable /uploads/import/<user-id>.html path to execute script in victims' wallabag sessions.
Why it matters now
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
Remediation
The sources list no fixed version for wallabag.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Timeline
- 2026-10-13 Threatist record created from CVE-2026-110228
- 2026-10-13 Alias added: GHSA-rqqm-gvvm-8vpc
- 2026-10-15 CISA SSVC decision points changed
- 2026-10-15 Priority changed: LOW → MEDIUM
References
Other 4
- https://github.com/wallabag/wallabag/blob/74cbfd945bc316b5cf0308ba56e32fd2ed3443c0/src/Wallabag/ImportBundle/Controller/HtmlController.php#L28-L54
- https://github.com/wallabag/wallabag/blob/74cbfd945bc316b5cf0308ba56e32fd2ed3443c0/app/config/wallabag.yml#L169-L177
- https://github.com/wallabag/wallabag/blob/74cbfd945bc316b5cf0308ba56e32fd2ed3443c0/web/.htaccess#L50-L56
- https://github.com/wallabag/wallabag
More wallabag vulnerabilities
- TI-2023-00696 Improper Authorization in wallabag/wallabag CVSS 3.1MEDIUM 5.3
- TI-2026-56644 wallabag 2 through 2.6.14 allows SSRF because a crafted title or content field is mishandled during PDF export. CVSS 3.1MEDIUM 6.4
- TI-2023-04113 Cross-Site Request Forgery (CSRF) in wallabag/wallabag CVSS 3.1MEDIUM 6.5
- TI-2023-00699 CSRF in wallabag/wallabag CVSS 3.1MEDIUM 6.5
- TI-2023-04112 Cross-Site Request Forgery (CSRF) in wallabag/wallabag CVSS 3.1MEDIUM 5.7
- TI-2023-00698 Cross-site Scripting (XSS) - Stored in wallabag/wallabag CVSS 3.1MEDIUM 5.4
Sources
- CVE-2026-110228 · CVE Program
- CVE-2026-110228 · NVD
- FIRST EPSS
- GHSA-rqqm-gvvm-8vpc · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences