CVE-2026-25537 is a Type Confusion vulnerability in the jsonwebtoken Rust library (prior to version 10.3.0). It allows attackers to bypass critical time-based security restrictions, such as "Not Before" checks, by providing malformed standard claims. Rated 7.5 HIGH on CVSS, this vulnerability can lead to authentication and authorization bypasses due to its network-based attack vector and low attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 10.3.0CPE matchmatch criteria | cpe:2.3:a:keats:jsonwebtoken:*:*:*:*:*:rust:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/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
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.