Skip to main content
CVE-2026-78667VulnerabilityPublished

Red Hat Security Advisory: opentelemetry-collector security update

Affects Red Hat opentelemetry-collectorSource GCVE Database

0
Compare

Mentioned vulnerabilities

Authoritative record:CVE-2026-78667· High 7.5

Not known to be exploited · CVSS 7.5 High : upgrade Red Hat http to 1.27.2 or 1.26.9 soon.

Data as of 2 Nov 2026, 14:33 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 1.27.2, 1.26.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 8 Oct 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 2 Nov 2026.

What to do

Upgrade net/http to 1.27.2 or 1.26.9.

Affected software

ProductAffectedFixed in
Go standard librarynet/httpAffected
  • >=1.27.0-0 <1.27.2
Fixed in
  • 1.27.2
Go standard librarynet/httpAffected
  • <1.26.9
Fixed in
  • 1.26.9
Gonet/httppkg:golang/net/httpOther threatsAffected
  • <1.26.9
  • >=1.27.0-0 <1.27.2
Fixed in
  • 1.26.9
  • 1.27.2

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

AI-suggested

Red Hat has released updated opentelemetry-collector packages for Red Hat Enterprise Linux 9.8 Extended Update Support that address these vulnerabilities. Users should apply the provided security update promptly to remediate these issues. Detailed update instructions are available in the Red Hat advisory linked in the references. No additional mitigation steps are indicated beyond applying the official update.

Description

Red Hat has issued a security advisory for the opentelemetry-collector component in Red Hat Enterprise Linux 9.8 Extended Update Support. The update addresses multiple denial of service vulnerabilities in various Go language packages used by the collector, as well as a man-in-the-middle vulnerability involving untrusted intermediate certificates. The vulnerabilities include crafted HTTP Range headers, excessive HTTP/2 SETTINGS frames, memory limit bypass in multipart form parsing, multiple ECH outer extension references, and untrusted intermediate certificates. These issues could allow denial of service attacks or man-in-the-middle attacks if exploited.

References

Community reviews

Loading reviews…