01 Record
CVE-2026-118664
decode-uri-component: Denial of service via quadratic replacement of percent-encoded runs
HighPUBLISHEDCNA: GitHub_M
CNA base score8.2 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
02 Description
decode-uri-component: Denial of service via quadratic replacement of percent-encoded runs
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- Not scored by EPSS
- EPSS percentile
- Not scored by EPSS
- NVD base score
- 8.2 (CVSS v4.0), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/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 2026-10-29.
- 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
- 2026-10-28 20:37Z21 HR AGO
- Last updated
- 2026-10-29 17:23Z53 MIN AGO
- Reserved
- 2026-10-28
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.2)
- CNA CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- Weaknesses
- Data version
- 5.2
- Document digest
- c543c75aec797800a173c759fc3d0eaff990a094874972b7629e9569b7348396
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/SamVerschueren/decode-uri-component/security/advisories/GHSA-qr28-fpjm-wq7f
- github.comhttps://github.com/SamVerschueren/decode-uri-component/commit/fad01d65b93bd3f2f0dc32dfd8d57a38b57bc608
- github.comhttps://github.com/SamVerschueren/decode-uri-component/releases/tag/v0.5.1