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CVE-2026-34993VulnerabilityPublished Updated

Red Hat Security Advisory: satellite/iop-vulnerability-engine-rhel9 container image available as a Technology Preview

Affects Red Hat aiohttpSource GCVE Database

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Authoritative record:CVE-2026-34993· Medium 6.4

Not known to be exploited · CVSS 6.4 Medium.

Data as of 30 Oct 2026, 22:57 UTC

CVSS 3.1 base score
6.4Medium
How severe the flaw is on the 0–10 CVSS scale.
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:C/C:L/I:H/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 2 Jun 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 30 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
PyPIaiohttppkg:pypi/aiohttpOther threatsAffected
  • *
Fixed in–

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AI-suggested

Red Hat has not released an official fix for this vulnerability yet. Applications using AIOHTTP that load untrusted files via the CookieJar.load() function should implement input sanitization before loading to prevent malicious code execution. Users should follow Red Hat Satellite documentation for Lightspeed installation and configuration and monitor Red Hat advisories for future patches.

Description

CVE-2026-34993 is a vulnerability in the AIOHTTP Python asynchronous HTTP framework used by Red Hat Satellite's Lightspeed component. The flaw allows potential arbitrary code execution when untrusted input is loaded via the CookieJar.load() function. Exploitation requires an application to be configured to process attacker-controlled files, which is not typical in default Red Hat deployments. Red Hat has not released a fix yet but provides guidance on mitigating the risk by sanitizing inputs before loading.

References

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