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CVE-2026-33021

🗓️ 14 Apr 2026 21:57:22Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 7 Views

Use-after-free in libsixel sixel_encoder_encode_bytes before 1.8.7 due to freeing caller pixel buffer on resize.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-33021
14 Apr 202621:57
attackerkb
Circl
CVE-2026-33021
15 Apr 202600:03
circl
CNNVD
libsixel 资源管理错误漏洞
14 Apr 202600:00
cnnvd
Cvelist
CVE-2026-33021 libsixel: Use-after-free in sixel_encoder_encode_bytes()
14 Apr 202621:57
cvelist
Debian CVE
CVE-2026-33021
14 Apr 202621:57
debiancve
EUVD
EUVD-2026-22746
14 Apr 202621:57
euvd
NVD
CVE-2026-33021
14 Apr 202623:16
nvd
OSV
DEBIAN-CVE-2026-33021
14 Apr 202623:16
osv
OSV
UBUNTU-CVE-2026-33021
14 Apr 202623:16
osv
Positive Technologies
PT-2026-32951
14 Apr 202600:00
ptsecurity
Rows per page
NVD
Vulners
Node
saitohalibsixelRange<1.8.7-r1
[
  {
    "vendor": "saitoha",
    "product": "libsixel",
    "versions": [
      {
        "version": "< 1.8.7-r1",
        "status": "affected"
      }
    ]
  }
]

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17 Jun 2026 10:36Current
6Medium risk
Vulners AI Score6
CVSS 3.17.3
EPSS0.00247
SSVC
7