CVE-2026-68006: Puma v.5.0.0 · CWE-444
Affects pumaSource GCVE Database
Not known to be exploited · CVSS 9.1 Critical.
Data as of 26 Oct 2026, 09:16 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 44% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 10 Sep 2026
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 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu:Pro:20.04:LTSpumapkg:deb/ubuntu/puma?arch=source&distro=esm-apps/focalOther threats | Affected
| Fixed in– |
Ubuntu:Pro:22.04:LTSpumapkg:deb/ubuntu/puma?arch=source&distro=esm-apps/jammyOther threats | Affected
| Fixed in– |
Ubuntu:24.04:LTSpumapkg:deb/ubuntu/puma?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu:26.10pumapkg:deb/ubuntu/puma?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu:26.04:LTSpumapkg:deb/ubuntu/puma?arch=source&distro=resoluteOther 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
Until an official fix is available, consider restricting network exposure of Puma servers and applying compensating controls to limit attack surface. Monitor vendor channels for updates and patches addressing this vulnerability.
Description
A critical remote code execution vulnerability (CVE-2026-68006) exists in Puma web server versions from 5.0.0 up to but not including 8.0.3. The flaw is located in the ext/puma_http11/http11_parser.rl file and allows unauthenticated attackers to execute arbitrary code remotely. The vulnerability has a high CVSS score of 9.1, indicating severe impact on confidentiality and integrity without requiring user interaction or privileges.