{"vulnerability": "CVE-2026-101019", "sightings": [{"uuid": "c198c4b3-4f57-4b05-bfbc-e5208bc882e3", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "86ecb4e1-bb32-44d5-9f39-8a4673af8385", "vulnerability": "CVE-2026-101019", "type": "seen", "source": "https://cyber.gc.ca/en/alerts-advisories/f5-security-advisory-av26-1049", "content": "", "creation_timestamp": "2026-10-15T11:20:30.000000Z"}, {"uuid": "23334b6e-e151-440a-9747-34c92946c34c", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2026-101019", "type": "seen", "source": "https://infosec.exchange/users/cve/statuses/117441072026309768", "content": "CVE-2026-101019 NGINX ngx_http_js_module vulnerability DescriptionNGINX JavaScript (njs) has a vulnerability where the njs XML module exposes entity-backed XML attributes inconsistently with libxml2 canonicalization. In both the built-in njs and QuickJS backends during the canonicalization process, the $attr$Name getter may return undefined for an explicitly present attribute containing an internal entity reference. The $attrs getter may return a value derived only from the first attribute child. This may allow an unauthenticated attacker that invests significant effort in obtaining a genuinely signed document to skip validation while signature verification succeeds. An nginx-saml deployment is a confirmed affected consumer when run with the built-in njs backend.\nImpactIn affected signed-XML consumers, an unauthenticated attacker can cause security-relevant attributes to appear absent or truncated while signature verification succeeds. In nginx-saml, this can bypass expiry, Destination, and request-correlation checks, enabling replay or acceptance of a response outside its intended context. It does not permit signature or identity forgery, or a direct availability impact. There is no control plane exposure; this is a data plane issue only.\n Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.\nhttps://www.cve.org/CVERecord?id=CVE-2026-101019https://my.f5.com/manage/s/article/K000162615#F5 #NGINXJavaScript#CVE_2026_101019#bot", "creation_timestamp": "2026-10-14T20:09:10.674107Z"}]}