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CVE-2026-45149VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Affects Red HatSource GCVE Database

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Authoritative record:CVE-2026-45149· High 7.5

Not known to be exploited · CVSS 7.5 High : upgrade Red Hat brace-expansion to 5.0.6 soon.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% 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 5.0.6
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 29 May 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

Upgrade brace-expansion to 5.0.6.

Affected software

ProductAffectedFixed in
npmbrace-expansionpkg:npm/brace-expansionOther threatsAffected
  • >=5.0.0 <5.0.6
Fixed in
  • 5.0.6
Ubuntu 18.04 LTSnode-brace-expansionpkg:deb/ubuntu/node-brace-expansion?arch=source&distro=bionicOther threatsAffected
  • =1.1.8-1
Fixed in–
Ubuntu 20.04 LTSnode-brace-expansionpkg:deb/ubuntu/node-brace-expansion?arch=source&distro=focalOther threatsAffected
  • =1.1.8-1
  • =1.1.11-1
Fixed in–
Ubuntu 22.04 LTSnode-brace-expansionpkg:deb/ubuntu/node-brace-expansion?arch=source&distro=jammyOther threatsAffected
  • =2.0.0-1
  • =2.0.1-1
Fixed in–
Ubuntu 24.04 LTSnode-brace-expansionpkg:deb/ubuntu/node-brace-expansion?arch=source&distro=nobleOther threatsAffected
  • =2.0.1-2
  • =2.0.1+~1.1.0-1
Fixed in–
Ubuntu 25.10node-brace-expansionpkg:deb/ubuntu/node-brace-expansion?arch=source&distro=questingOther threatsAffected
  • =2.0.1+~1.1.0-1
  • =2.0.1+~1.1.0-2
Fixed in–

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 (nodejs24-24.15.0-1.hum1 and related) that fix this vulnerability. Users should apply these updates to remediate the issue. No other mitigation is currently available or recommended by Red Hat. Systems running brace-expansion versions 1.x or 2.x are not affected and do not require action.

Description

A vulnerability (CVE-2026-45149) was found in the brace-expansion library versions 5.0.0 through 5.0.5 used in Red Hat Hardened Images RPMs. The flaw allows an attacker to cause a Denial of Service (DoS) by providing a large numeric range for expansion, which leads to excessive memory allocation and potential application crashes. Red Hat products shipping brace-expansion versions 1.x and 2.x are not affected. No mitigation is currently available that meets Red Hat's criteria for ease of use and stability. An update including fixed RPM packages has been released.

References

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