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CVE-2026-69153 PostCSS: incomplete fix of CVE-2026-45623 — attacker-controlled sourceMappingURL reads arbitrary .map files when `from` is unset

🗓️ 03 Aug 2026 16:56:25Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 52 Views

PostCSS incomplete fix lets attacker read arbitrary source maps when from is unset via crafted sourceMappingURL; fixed in 8.5.19.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-69153
3 Aug 202616:56
attackerkb
cgr
Chainguard
CVE-2026-69153 vulnerabilities
4 Aug 202620:23
cgr
circl
Circl
CVE-2026-69153
3 Aug 202618:28
circl
cve
CVE
CVE-2026-69153
3 Aug 202616:56
cve
debiancve
Debian CVE
CVE-2026-69153
3 Aug 202616:56
debiancve
euvd
EUVD
EUVD-2026-52373
3 Aug 202616:56
euvd
github
Github Security Blog
PostCSS: incomplete fix of GHSA-6g55-p6wh-862q — attacker-controlled sourceMappingURL reads arbitrary .map files when `from` is unset
3 Aug 202617:11
github
nvd
NVD
CVE-2026-69153
3 Aug 202617:16
nvd
osv
OSV
CGA-97HC-47Q4-9F8X
4 Aug 202619:00
osv
osv
OSV
CLEANSTART-2026-YP71540 Security fixes in n8n 2.28.0-r2
13 Aug 202612:10
osv
Rows per page
[
  {
    "vendor": "postcss",
    "product": "postcss",
    "versions": [
      {
        "version": "< 8.5.19",
        "status": "affected"
      }
    ]
  }
]

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