7.6

CVE-2026-44166: Pocketbase: Account pre-hijacking via OAuth2 unverfied->verified autolinking upgrade

Analyzed
AliasesGHSA-pq7p-mc74-g65wGO-2026-5548
Published 12-05-2026Last modified 12-05-2026

Vulnerability summary

CVE-2026-44166 is a high (CVSS 7.6) Improper Authentication vulnerability in pocketbase. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 16% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 6.1, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.6/10
010
High · v3.1 (NVD)
EPSS score
0.25%
0%100%
Low · -0.07 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 4 · Related 4
OPENSUSE-SU-2026:12167-1OPENSUSE-SU-2026:21551-1SUSE-SU-2026:23216-1SUSE-SU-2026:23227-1

Timeline

  1. 12-05-2026
    PublishedVulnerability first disclosed.
  2. 12-05-2026
    Last modifiedVulnerability information updated.

Description

Pocketbase is an open source web backend written in go. Prior to 0.22.42 and 0.37.4, in some situations, if an attacker knows the email address of the victim they can create and link an unverified PocketBase user in advance by authenticating with one of the OAuth2 app providers, e.g. "A". When the victim gets invited or decides to sign up to your app on their own with provider "B" (PocketBase OAuth2 auth requires to be with a different provider because we don't allow multiple OAuth2 accounts from the same provider to be associated to a single PocketBase user), the user created previously by the attacker will be autolinked, upgraded to "verified" and its old password reset. This vulnerability is fixed in 0.22.42 and 0.37.4.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

16%

Versus all other CVEs

30-day change

Decrease -0.07 pp

From 0.32% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.

Github.com/pocketbase1 product
  • pocketbase< 0.22.42 | ≥ 0.30.0, < 0.37.4
Pocketbase1 product
  • pocketbase≥ 0.30.0, < 0.37.4 | < 0.22.42 | ≥ 0.23.0, < 0.37.4

2 vendors · 2 products

References

4 links