CVE-2026-49477High· 7.5▾ TwilightA flaw was found in soupsieve, a CSS selector library. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by supplying specially crafted, untrusted CSS selector strings. The flaw occurs due to a regular expressi…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Exploit-prediction probability, daily snapshots since Jul 15.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.6%
Last analysed / modified upstream
A flaw was found in soupsieve, a CSS selector library. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by supplying specially crafted, untrusted CSS selector strings. The flaw occurs due to a regular expression vulnerable to catastrophic backtracking when processing an attribute selector with an unterminated quoted value, leading to CPU exhaustion.
soupsieve: Soupsieve: Denial of Service via crafted CSS selector strings — rated Important by Red Hat. Released 2026-07-14, updated 2026-09-21.
Affected:
Fixed:
No fix planned:
Not affected:
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ https://access.redhat.com/errata/RHSA-2026:34119 For Red Hat OpenShift AI 3.4.4 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this errata update:
https://docs.redhat.com/en/documentation/red_hat_openshift_ai/ https://access.redhat.com/errata/RHSA-2026:60520 Before applying this update, make sure all previously released errata relevant to your system have been applied.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:66084
Affected packages:
soupsieve <= 2.8.3Patched in:
soupsieve 2.8.4Connected by shared product, vendor, weakness, or advisory.
CVE-2026-59885High· 7.5pyasn1: python-pyasn1: pyasn1: Denial of Service via crafted ASN.1 OBJECT IDENTIFIER (CVE-2026-59885)
CVE-2026-59200High· 7.5Pillow: Pillow: Denial of service via crafted PDF stream (CVE-2026-59200)
CVE-2026-59197High· 8.2Pillow: Pillow: Native heap out-of-bounds write (CVE-2026-59197)
CVE-2026-59204High· 7.5Pillow: Pillow: Denial of Service via crafted JPEG2000 image (CVE-2026-59204)
CVE-2026-54058Critical· 9.1Pillow: Pillow: Memory disclosure or denial of service via crafted McIdas AREA image (CVE-2026-54058)
CVE-2026-59205High· 7.5Pillow: Pillow: Controlled native heap corruption in ImageCms.ImageCmsTransform.apply API (CVE-2026-59205)