CVE-2026-111943: yggdrasil security update
Affects yggdrasilSource GCVE Database
Not known to be exploited : upgrade to 0.4.9.2-1.el10_2.4 when convenient.
Data as of 29 Oct 2026, 14:41 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 0.4.9.2-1.el10_2.4
Exploitation evidence
Disclosed: evidence found.
CVE published 21 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
Upgrade the AlmaLinux to 0.4.9.2-1.el10_2.4.
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| AlmaLinux 10yggdrasil | Affected
| Fixed in
|
| AlmaLinux 10yggdrasil-devel | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A security update is available and should be applied promptly. The fixed version is 0.4.9.2-1.el10_2.4. Refer to the Red Hat advisory RHSA-2026:91138 and the update instructions at https://access.redhat.com/articles/11258 for detailed remediation steps. No additional mitigation actions are indicated beyond applying the official patch.
Description
yggdrasil is a system daemon that subscribes to MQTT topics and routes data to child worker processes via D-Bus. A security update addresses multiple vulnerabilities including a man-in-the-middle attack risk due to untrusted intermediate certificates in the crypto/x509 package (CVE-2026-111943). The update fixes this and other denial of service issues in related Golang components. The vulnerability affects versions prior to 0.4.9.2-1.el10_2.4 and is rated as important by Red Hat.
References
- access.redhat.com/errata/RHSA-2026:91138 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-111943 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-78669 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-94440 (opens in a new tab)
- bugzilla.redhat.com/2548341 (opens in a new tab)
- bugzilla.redhat.com/2548344 (opens in a new tab)
- bugzilla.redhat.com/2556068 (opens in a new tab)
- errata.almalinux.org/10/ALSA-2026-91138.html (opens in a new tab)