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CVE-2026-54522

🗓️ 30 Jul 2026 16:33:06Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 92 Views

CVE-2026-54522: MessagePack Ruby Buffer#clear causes UAF and cross-buffer disclosure; fixed in 1.8.2.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-54522
30 Jul 202616:33
attackerkb
cgr
Chainguard
CVE-2026-54522 vulnerabilities
5 Aug 202620:23
cgr
circl
Circl
CVE-2026-54522
30 Jul 202617:31
circl
cvelist
Cvelist
CVE-2026-54522 MessagePack::Buffer#clear Use-After-Free that Enables Cross-Buffer Disclosure
30 Jul 202616:33
cvelist
debiancve
Debian CVE
CVE-2026-54522
30 Jul 202616:33
debiancve
euvd
EUVD
EUVD-2026-51235
30 Jul 202616:33
euvd
github
Github Security Blog
MessagePack::Buffer#clear Use-After-Free that Enables Cross-Buffer Disclosure
30 Jul 202616:33
github
mscve
Microsoft CVE
MessagePack::Buffer#clear Use-After-Free that Enables Cross-Buffer Disclosure
7 Aug 202608:17
mscve
nvd
NVD
CVE-2026-54522
30 Jul 202617:16
nvd
osv
OSV
CGA-3XMV-V2PH-R2X9
5 Aug 202611:14
osv
Rows per page
NVD
Vulners
Node
msgpackmessagepackRange<1.8.2ruby
[
  {
    "vendor": "msgpack",
    "product": "msgpack-ruby",
    "versions": [
      {
        "version": "< 1.8.2",
        "status": "affected"
      }
    ]
  }
]

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05 Aug 2026 19:41Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.15.4
CVSS 42.1
EPSS0.00136
SSVC
92