01 Record
CVE-2026-72700
Grav before 3.9.1 Timing Attack via Non-Constant-Time Token Comparison
HighPUBLISHEDCNA: VulnCheck
CNA base score8.7 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
02 Description
Grav before 3.9.1 Timing Attack via Non-Constant-Time Token Comparison
03 Exploitation and scoring
- Exploitation
- Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
- SSVC decision
- ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.43% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 37.2% of scored records. A rank, not a probability.
- NVD base score
- 8.7 (CVSS v4.0), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- NVD analysis status
- Deferred. NVD last modified this record on 2026-10-12.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-08-25 01:30Z2 MO AGO
- Last updated
- 2026-08-25 17:25Z2 MO AGO
- Reserved
- 2026-08-10
- Assigning CNA
- VulnCheck
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.7)
- CNA CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- Weaknesses
- CWE-208Observable Timing DiscrepancyBase
- Data version
- 5.2
- Document digest
- 6b4fd4b586d900622a44b1228d022de2d402dbea621b46ccc94413e5e473fd52
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comGitHub Security Advisory (GHSA-x239-6jqx-5hjh)https://github.com/getgrav/grav/security/advisories/GHSA-x239-6jqx-5hjh
- www.vulncheck.comVulnCheck Advisory: Grav before 3.9.1 Timing Attack via Non-Constant-Time Token Comparisonhttps://www.vulncheck.com/advisories/grav-before-timing-attack-via-non-constant-time-token-comparison