Medium severity5.4NVD Advisory· Published Nov 7, 2021· Updated Jun 17, 2026
CVE-2021-25978
CVE-2021-25978
Description
Apostrophe CMS versions between 2.63.0 to 3.3.1 are vulnerable to Stored XSS where an editor uploads an SVG file that contains malicious JavaScript onto the Images module, which triggers XSS once viewed.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
apostrophenpm | >= 2.63.0, < 3.4.0 | 3.4.0 |
Affected products
3cpe:2.3:a:apostrophecms:apostrophecms:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:apostrophecms:apostrophecms:*:*:*:*:*:*:*:*range: >=2.63.0,<=3.3.1
- (no CPE)range: unspecified
Patches
Vulnerability mechanics
References
3- github.com/apostrophecms/apostrophe/commit/c8b94ee9c79468f1ce28e31966cb0e0839165e59nvdPatchThird Party AdvisoryWEB
- github.com/advisories/GHSA-4r9c-jghc-cx5mghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-25978ghsaADVISORY
News mentions
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