JWT leak via Open Redirect in Programmatic access

published 2021-04-02 5y ago modified 2026-07-08 4mo ago also GHSA-35vc-w93w-75c2 , GO-2022-0783 , EUVD-2021-0913

cvss: 6.1; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 51%
public exploits: 0; none known

Pomerium before 0.13.4 has an Open Redirect (issue 1 of 2).

Patch / fix

fixed in 2 links 1

go github.com/pomerium/pomerium 0.13.4
pomerium pomerium 0.13.4

github.com/pomerium/pomerium#2049 pull request

Is CVE-2021-29651 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	5.8	AV:N/AC:M/Au:N/C:P/I:P/A:N
GitHub	3.1	6.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
go	github.com/pomerium/pomerium	<0.13.4	0.13.4

Classification

Weakness

CWE-601 URL Redirection to Untrusted Site
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

github.com /pomerium/pomerium/pull/2049
web, patch
github.com /pomerium/pomerium/security/advisories/GHSA-35vc-w93w-75c2
web, third-party-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2021-29651
advisory

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.