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Oj- Use-After-Free in 'Oj::Parser' array_class/hash_class GC Marking

🗓️ 19 Jun 2026 00:00:00Reported by RubySecType 
rubygems
 rubygems
🔗 rubysec.com👁 20 Views

Oj::Parser does not mark array_class and hash_class during GC, causing use-after-free and segfault after parse.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
cgr
Chainguard
CVE-2026-54901 vulnerabilities
26 Jun 202620:23
–cgr
circl
Circl
CVE-2026-54901
1 Jul 202602:20
–circl
cve
CVE
CVE-2026-54901
30 Jun 202623:36
–cve
cvelist
Cvelist
CVE-2026-54901 Oj: Use-After-Free in Oj::Parser array_class/hash_class GC Marking
30 Jun 202623:36
–cvelist
debian
Debian
[SECURITY] [DLA-4803-1] ruby-oj security update
30 Sep 202623:22
–debian
debian
Debian
[SECURITY] [DSA 6521-1] ruby-oj security update
27 Sep 202617:30
–debian
debiancve
Debian CVE
CVE-2026-54901
30 Jun 202623:36
–debiancve
nessus
Tenable Nessus
Debian dla-4803 : ruby-oj - security update
30 Sep 202600:00
–nessus
nessus
Tenable Nessus
Photon OS 4.0: Rubygem PHSA-2026-4.0-1052
9 Jul 202600:00
–nessus
nessus
Tenable Nessus
Photon OS 5.0: Rubygem PHSA-2026-5.0-0917
9 Jul 202600:00
–nessus
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Vulners
Node
rubyojRange≤3.17.3

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19 Jun 2026 00:00Current
6Medium risk
Vulners AI Score6
CVSS 46.3
EPSS0.00333
SSVC
20