Red Hat Security Advisory: pcs security update
Affects Red HatSource GCVE Database
Not known to be exploited : upgrade to 8.10.3 when convenient.
Data as of 25 Oct 2026, 19:02 UTC
Rated by Threat Radar · No CVSS score from NVD or the CNA
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 42% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 8.10.3
Exploitation evidence
Disclosed: evidence found.
CVE published 12 Dec 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 2026-10-25.
What to do
Upgrade redhat/pcs to 8.10.3.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Red Hatredhat/pcspkg:rpm/redhat/pcsOther threats | 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 to affected systems. Red Hat provides updated pcs packages in version 0.10.18-2.el8_10.3 for Red Hat Enterprise Linux 8 variants. Users should follow the official Red Hat guidance at https://access.redhat.com/articles/11258 to apply the update. No additional mitigations are specified by the vendor.
Description
A moderate severity open redirect vulnerability (CVE-2024-21510) exists in the pcs packages used for configuring Pacemaker and Corosync utilities on Red Hat Enterprise Linux 8. The vulnerability is due to improper handling of the X-Forwarded-Host header in the Sinatra framework. Red Hat has released security updates to address this issue in multiple variants of Red Hat Enterprise Linux 8 High Availability and Resilient Storage products.