CVE-2023-29019 json
Session fixation in fastify-passport
published 2023-04-21 3 y ago modified 2026-09-10 1 mo ago also GHSA-4m3m-ppvx-xgw9 , EUVD-2023-1192
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 55%
- public exploits
- 0
- none known
Summary
@fastify/passport is a port of passport authentication library for the Fastify ecosystem. Applications using `@fastify/passport` in affected versions for user authentication, in combination with `@fastify/session` as the underlying session management mechanism, are vulnerable to session fixation attacks from network and same-site attackers. fastify applications rely on the `@fastify/passport` library for user authentication. The login and user validation are performed by the `authenticate` function. When executing this function, the `sessionId` is preserved between the pre-login and the authenticated session. Network and same-site attackers can hijack the victim's session by tossing a valid `sessionId` cookie in the victim's browser and waiting for the victim to log in on the website. As a solution, newer versions of `@fastify/passport` regenerate `sessionId` upon login, preventing the attacker-controlled pre-session cookie from being upgraded to an authenticated session. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Patch / fix
- npm @fastify/passport 1.1.0, 2.3.0
- fastify passport 1.1.0, 2.3.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 21 mo ago
Exploit prediction
0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
| NVD | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
| GitHub | 3.1 | 8.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @fastify/passport | <1.1.0 >=2.0.0, <2.3.0 |
1.1.0 2.3.0 |
Affected products
- fastify fastify-passport
Classification
- Weakness
-
- CWE-384 Session Fixation
References
-
github.com
/fastify/fastify-passport/commit/43c82c321db58ea3e375dd475de60befbfcf2a11
web, patch
-
github.com
/fastify/fastify-passport/security/advisories/GHSA-4m3m-ppvx-xgw9
web, vendor-advisory
-
owasp.org
/www-community/attacks/Session_fixation
web, technical-description
-
nvd.nist.gov
/vuln/detail/CVE-2023-29019
advisory
-
github.com
/fastify/fastify-passport
package
Sources
- CVE List CVE-2023-29019
- GitHub Advisory GHSA-4m3m-ppvx-xgw9
- NVD CVE-2023-29019
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