CVE-2020-26892
CRITICAL9.8EPSS 0.55%Incorrect handling of credential expiry in github.com/nats-io/jwt
Published: 5/21/2021Modified: 4/28/2026
Description
The JWT library in NATS nats-server before 2.1.9 has Incorrect Access Control because of how expired credentials are handled.
Affected packages (4)
- Debian/golang-github-nats-io-jwtfrom 0, < 2.2.0-1
- Go/github.com/nats-io/jwtfrom 0, < 1.1.0
- Go/github.com/nats-io/jwtfrom 0, < 1.1.0
- Go/github.com/nats-io/nats-server/v2from 0, < 2.1.9
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
References (13)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2020-26892
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2020-26892
- PATCHhttps://github.com/nats-io/jwt
- PATCHhttps://github.com/nats-io/nats-server
- WEBhttps://advisories.nats.io/CVE/CVE-2020-26892.txt
- WEBhttps://github.com/nats-io/jwt/commit/e11ce317263cef69619fc1ca743b195d02aa1d8a
- WEBhttps://github.com/nats-io/jwt/security/advisories/GHSA-4w5x-x539-ppf5
- WEBhttps://github.com/nats-io/nats-server/commit/1e08b67f08e18cd844dce833a265aaa72500a12f
- WEBhttps://github.com/nats-io/nats-server/commits/master
- WEBhttps://github.com/nats-io/nats-server/security/advisories/GHSA-2c64-vj8g-vwrq
- WEBhttps://lists.fedoraproject.org/archives/list/[email protected]/message/VT67XCLIIBYRT762SVFBYFFTQFVSM3SI
- WEBhttps://pkg.go.dev/vuln/GO-2022-0380
- WEBhttps://www.openwall.com/lists/oss-security/2020/11/02/2