Moderate severityNVD Advisory· Published Jun 8, 2021· Updated Aug 4, 2024
CVE-2020-25817
CVE-2020-25817
Description
SilverStripe through 4.6.0-rc1 has an XXE Vulnerability in CSSContentParser. A developer utility meant for parsing HTML within unit tests can be vulnerable to XML External Entity (XXE) attacks. When this developer utility is misused for purposes involving external or user submitted data in custom project code, it can lead to vulnerabilities such as XSS on HTML output rendered through this custom code. This is now mitigated by disabling external entities during parsing. (The correct CVE ID year is 2020 [CVE-2020-25817, not CVE-2021-25817]).
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 |
|---|---|---|
silverstripe/frameworkPackagist | >= 4.0.0, < 4.7.4 | 4.7.4 |
Affected products
3- SilverStripe/SilverStripedescription
- osv-coords2 versions
< 4.6.0+ 1 more
- (no CPE)range: < 4.6.0
- (no CPE)range: >= 4.0.0, < 4.7.4
Patches
Vulnerability mechanics
References
8- github.com/advisories/GHSA-3vjc-5x79-m9r8ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2020-25817ghsaADVISORY
- forum.silverstripe.org/c/releasesghsax_refsource_MISCWEB
- www.silverstripe.org/blog/tag/releaseghsax_refsource_MISCWEB
- www.silverstripe.org/download/security-releasesghsaWEB
- www.silverstripe.org/download/security-releases/mitrex_refsource_CONFIRM
- www.silverstripe.org/download/security-releases/cve-2020-25817mitrex_refsource_MISC
- www.silverstripe.org/download/security-releases/cve-2021-25817ghsaWEB
News mentions
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