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CVE-2026-13608VulnerabilityPublished Updated

curl

Affects curlSource GCVE Database

0

Mentioned vulnerabilities

Not known to be exploited · CVSS 7.4 High · fixed in 8.5.0-2ubuntu10.15 : patch curl soon.

Data as of 26 Oct 2026, 13:47 UTC

CVSS 3.1 base score
7.4High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 42% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 8.5.0-2ubuntu10.15, 8.20.0-2ubuntu11, 8.18.0-1ubuntu2.7
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade the Ubuntu curl to 8.5.0-2ubuntu10.15 (package) or 8.20.0-2ubuntu11 (package) or 8.18.0-1ubuntu2.7 (package).

Affected software

ProductAffectedFixed in
Ubuntu 26.10curlpkg:deb/ubuntu/curl?arch=source&distro=stonkingOther threatsAffected
  • <8.20.0-2ubuntu11
Fixed in
  • 8.20.0-2ubuntu11
Ubuntu 26.04 LTScurlpkg:deb/ubuntu/curl?arch=source&distro=resoluteOther threatsAffected
  • <8.18.0-1ubuntu2.7
Fixed in
  • 8.18.0-1ubuntu2.7
Ubuntu 24.04 LTScurlpkg:deb/ubuntu/curl?arch=source&distro=nobleOther threatsAffected
  • <8.5.0-2ubuntu10.15
Fixed in
  • 8.5.0-2ubuntu10.15

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

A flaw in the libcurl SASL negotiation for LDAP authentication allows an incomplete handshake sequence to be misinterpreted as a successful cryptographic verification. An attacker executing a Man-in-the-Middle (MITM) attack can inject a premature or shortcut response that bypasses complete peer validation.

References

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