Skip to main content
CVE-2026-75838VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Affects Red HatSource GCVE Database

0
Compare
Authoritative record:CVE-2026-75838· Medium 5.1

Not known to be exploited · CVSS 5.1 Medium : upgrade Red Hat dompurify to 3.4.13 when convenient.

Data as of 10 Nov 2026, 23:24 UTC

CVSS 4.0 base score
5.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 33% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.4.13
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Aug 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 10 Nov 2026.

What to do

Upgrade DOMPurify and dompurify to 3.4.13.

Affected software

ProductAffectedFixed in
cure53DOMPurifyAffected
  • <3.4.13
Fixed in
  • 3.4.13
npmdompurifypkg:npm/dompurifyOther threatsAffected
  • <3.4.13
Fixed in
  • 3.4.13

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 RPM packages (grafana13.2-13.2.1-0.6.hum1) that fix this vulnerability. Users should apply these updates to remediate the issue. Default DOMPurify configurations are not affected, so no action is required if the default configuration is used. Refer to the Red Hat advisory RHSA-2026:70994 for detailed update instructions.

Description

A cross-site scripting (XSS) vulnerability (CVE-2026-75838) was found in the DOMPurify library used by Red Hat Hardened Images RPMs, specifically in the grafana13.2 package. The issue occurs during in-place sanitization when element-removal hooks fail to neutralize detached subtrees, allowing malicious scripts to execute via crafted HTML with event handlers. This vulnerability requires a non-default DOMPurify configuration with an element-removal hook and user interaction with malicious content. Red Hat has released updated RPMs including grafana13.2-13.2.1-0.6.hum1 to fix this issue. Default DOMPurify configurations are not affected.

References

Community reviews

Loading reviews…