Digest · Tuesday
Security digest: September 29, 2026
1 known exploited (cisa kev) addition and 2 critical advisories.
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Take stock
- Do you run any of these? Apple Multiple Products. They are being exploited in the wild (CISA KEV). Patch or mitigate if you do; CISA’s federal deadline is 2026-10-13.
- npm: 1 critical advisory (
@xhmikosr/decompress,decompress). Check withnpm audit (or: npm ls <package>). - PyPI: 1 critical advisory (
PyJWT). Check withpip-audit (or: pip show <package>). - None of it touches your stack? Then there is nothing to do today. That is a result, not a failure to read carefully.
Known exploited (CISA KEV) 1
Added to CISA’s catalog on this day: confirmed exploitation in the wild. Due date = CISA’s deadline for US federal agencies.
| CVE | Product and flaw | CISA due |
|---|---|---|
| CVE-2026-86950 | Apple Multiple Products Apple Multiple Products Out-of-Bounds Write Vulnerability | 2026-10-13 |
Critical advisories by ecosystem 2
GitHub-reviewed advisories rated critical, published this day (Pacific time).
npm 1
Check: npm audit (or: npm ls <package>)
- @xhmikosr/decompress: Path traversal via symlink chain CVE-2026-101894 CVSS 9.1 Critical
@xhmikosr/decompress>= 11.0.0, <= 11.1.3 → fixed in 11.1.4;@xhmikosr/decompress<= 10.2.1 → fixed in 10.2.2;decompress<= 4.2.1 → no fix listed
PyPI 1
Check: pip-audit (or: pip show <package>)
- PyJWT: Asymmetric-PEM detection bypass: whitespace/line-ending-mutated public keys skip the HS/asymmetric confusion guard CVE-2026-102268 CVSS 9.1 Critical
PyJWT<= 2.13.0 → fixed in 2.14.0