CVE-2023-29020: @fastify/passport is a port of passport authentication library for the Fastify ecosystem

Q: How do I fix CVE-2023-29020?

passport: upgrade to 1.1.0, 2.3.0. Exact commands for each OS are on this page.

Q: Is CVE-2023-29020 being exploited?

CVE-2023-29020 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-29020 affect?

CVE-2023-29020 affects passport. Severity is medium (CVSS 6.5). @fastify/passport is a port of passport authentication library for the Fastify ecosystem. The CSRF (Cross-Site Request Forger) protection enforced by the `@fastify/csrf-protection` library, when combined with `@fastify/passport` in affected

Q: How urgent is CVE-2023-29020?

Priority 31/100. No elevated risk signals yet.

Routine

MEDIUM 6.5UPGRADE

CVE-2023-29020 is a medium-severity flaw (CVSS 6.5) affecting passport. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

@fastify/passport is a port of passport authentication library for the Fastify ecosystem. The CSRF (Cross-Site Request Forger) protection enforced by the `@fastify/csrf-protection` library, when combined with `@fastify/passport` in affected versions, can be bypassed by network and same-site attackers. `fastify/csrf-protection` implements the synchronizer token pattern (using plugins `@fastify/session` and `@fastify/secure-session`) by storing a r

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-352, CWE-384
Published	2023-04-21
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: fastify

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-04-21 23:15 UTCPublished CVE record published
2026-06-17 05:49 UTCUpdated Record last modified

fastify passport UPGRADE

Affected: < 1.1.0 · >= 2.0.0 and < 2.3.0

Fixed in: 1.1.0, 2.3.0

Safe to downgrade to: a release before 2.0.0

1. Check installed version

npm ls passport

2. UPGRADE to 1.1.0

npm install passport@">=1.1.0"

3. If no update is available yet, DOWNGRADE to a release before 2.0.0

npm view passport versions npm install passport@"<2.0.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-29020?

passport: upgrade to 1.1.0, 2.3.0. Exact commands for each OS are on this page.

Is CVE-2023-29020 being exploited?

CVE-2023-29020 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-29020 affect?

CVE-2023-29020 affects passport. Severity is medium (CVSS 6.5). @fastify/passport is a port of passport authentication library for the Fastify ecosystem. The CSRF (Cross-Site Request Forger) protection enforced by the `@fastify/csrf-protection` library, when combined with `@fastify/passport` in affected

How urgent is CVE-2023-29020?

Priority 31/100. No elevated risk signals yet.

Related CVEs

CVE-2026-39976 HIGH 7.1 UPGRADE Laravel Passport provides OAuth2 server support to Laravel
CVE-2023-29019 HIGH 8.1 UPGRADE @fastify/passport is a port of passport authentication library for the Fastify ecosystem
CVE-2022-25896 MEDIUM 4.8 UPGRADE This affects the package passport before 0.6.0

References

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