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CVE-2026-8458VulnerabilityPublished Updated

Red Hat Security Advisory: curl security update

Affects Red Hat curlSource GCVE Database

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Mentioned vulnerabilities

Not known to be exploited.

Data as of 29 Oct 2026, 16:09 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

AI-suggested

Red Hat has released an official security update for curl (version 7.76.1-40.el9_8.7) that addresses these vulnerabilities. Users should apply this update promptly to remediate the issues. Detailed update instructions are available in the Red Hat advisory and knowledge base article. No additional mitigation steps are indicated beyond applying the official fix.

Description

Red Hat has issued a security advisory for curl packages addressing two vulnerabilities: CVE-2026-8458, an unauthorized connection reuse due to a logical error in libcurl, and CVE-2026-8927, an information disclosure caused by uncleared proxy authentication state. These issues affect Red Hat Enterprise Linux 9 and its variants. The update is rated as Important by Red Hat Product Security. Users are advised to apply the provided update to remediate these vulnerabilities.

References

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