Medium severity5.3NVD Advisory· Published Aug 25, 2026· Updated Sep 1, 2026
CVE-2026-79772
CVE-2026-79772
Description
Nokogiri versions before 1.19.1 fail to check the return value from xmlC14NExecute in the canonicalize method, returning an empty string on failure instead of raising an exception. Attackers can exploit this to bypass signature validation in downstream SAML libraries by providing invalid canonicalized XML that is incorrectly accepted as valid.
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 |
|---|---|---|
nokogiriRubyGems | >= 1.5.1, < 1.19.1 | 1.19.1 |
Affected products
21- osv-coords20 versionspkg:apk/chainguard/ruby3.3-rails-8.1pkg:apk/chainguard/ruby4.0-rails-8.1pkg:apk/wolfi/ruby3.3-rails-8.1pkg:apk/chainguard/ruby3.3-rails-8.0pkg:apk/chainguard/ruby4.0-rails-7.1pkg:apk/chainguard/ruby3.2-rails-7.1pkg:apk/chainguard/ruby3.4-rails-7.1pkg:apk/chainguard/ruby3.4-rails-8.0pkg:apk/chainguard/ruby3.2-rails-7.2pkg:apk/chainguard/ruby3.2-rails-8.0pkg:apk/chainguard/ruby3.2-rails-8.1pkg:apk/chainguard/ruby3.3-rails-7.1pkg:apk/chainguard/ruby3.3-rails-7.2pkg:apk/chainguard/ruby3.4-rails-7.2pkg:apk/chainguard/ruby3.4-rails-8.1pkg:apk/chainguard/ruby4.0-rails-7.2pkg:apk/chainguard/ruby4.0-rails-8.0pkg:apk/wolfi/ruby3.2-rails-8.1pkg:apk/wolfi/ruby3.4-rails-8.1pkg:apk/wolfi/ruby4.0-rails-8.1
< 8.1.2-r2+ 19 more
- (no CPE)range: < 8.1.2-r2
- (no CPE)range: < 8.1.2-r1
- (no CPE)range: < 8.1.2-r2
- (no CPE)range: < 8.0.4-r2
- (no CPE)range: < 7.1.6-r1
- (no CPE)range: < 7.1.6-r2
- (no CPE)range: < 7.1.6-r2
- (no CPE)range: < 8.0.4-r2
- (no CPE)range: < 7.2.3-r2
- (no CPE)range: < 8.0.4-r2
- (no CPE)range: < 8.1.2-r1
- (no CPE)range: < 7.1.6-r2
- (no CPE)range: < 7.2.3-r2
- (no CPE)range: < 7.2.3-r2
- (no CPE)range: < 8.1.2-r1
- (no CPE)range: < 7.2.3-r2
- (no CPE)range: < 8.0.4-r1
- (no CPE)range: < 8.1.2-r1
- (no CPE)range: < 8.1.2-r1
- (no CPE)range: < 8.1.2-r1
- Range: <1.19.1
Patches
Vulnerability mechanics
References
4- github.com/advisories/GHSA-wx95-c6cv-8532ghsaADVISORY
- github.com/sparklemotion/nokogiri/security/advisories/GHSA-wx95-c6cv-8532nvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-79772ghsaADVISORY
- www.vulncheck.com/advisories/nokogiri-before-unchecked-return-value-canonicalizenvdThird Party AdvisoryWEB
News mentions
0No linked articles in our index yet.