CVE-2026-35569
high
CVSS v3
8.7
CVSS v4 NEW
—
VIR risk
8.7
Description
Stored XSS in SEO Fields Leads to Authenticated API Data Exposure in ApostropheCMS
Predictions
Exploit likelihood
91%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| npm | apostrophe | <4.29.0 | 4.29.0 |
| NPM | apostrophe | <= 4.28.0 | 4.29.0 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| apostrophecms | apostrophecms | {"endExcluding":"4.29.0"} | 4.29.0 |
References
- https://github.com/Chittu13/cve-research/tree/main/CVE-2026-35569
- https://github.com/apostrophecms/apostrophe/commit/0e57dd07a56ae1ba1e3af646ba026db4d0ab5bb3
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-855c-r2vq-c292
- https://nvd.nist.gov/vuln/detail/CVE-2026-35569
- https://github.com/apostrophecms/apostrophe
- https://github.com/advisories/GHSA-855c-r2vq-c292
CWEs
CWE-79 CWE-116
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.