CVE-2026-25727
From 0.3.6 to before 0.3.47, when user-provided input is provided to any type that parses with the RFC 2822 format, a denial of service attack via stack exhaustion is possible.
Does this matter?
Lower severity and a low EPSS score (0.30%). Track it; it rarely justifies an emergency change on its own.
Description
time provides date and time handling in Rust. From 0.3.6 to before 0.3.47, when user-provided input is provided to any type that parses with the RFC 2822 format, a denial of service attack via stack exhaustion is possible. The attack relies on formally deprecated and rarely-used features that are part of the RFC 2822 format used in a malicious manner. Ordinary, non-malicious input will never encounter this scenario. A limit to the depth of recursion was added in v0.3.47. From this version, an error will be returned rather than exhausting the stack.
- CVSS 4.0
- 6.8 MEDIUMCVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.30% probability · 23th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-121
- Affected
- time project/time
- Source
- security-advisories@github.com
References
- https://github.com/time-rs/time/blob/main/CHANGELOG.md#0347-2026-02-05Release Notes
- https://github.com/time-rs/time/commit/1c63dc7985b8fa26bd8c689423cc56b7a03841eePatch
- https://github.com/time-rs/time/releases/tag/v0.3.47Product, Release Notes
- https://github.com/time-rs/time/security/advisories/GHSA-r6v5-fh4h-64xcVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.