CVE-2022-30935: An authorization bypass in b2evolution allows remote, unauthenticated attackers to predict password reset toke

Q: How do I fix CVE-2022-30935?

b2evolution: upgrade to 7.2.5. Exact commands for each OS are on this page.

Q: Is CVE-2022-30935 being exploited?

CVE-2022-30935 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-2022-30935 affect?

CVE-2022-30935 affects b2evolution. Severity is critical (CVSS 9.1). An authorization bypass in b2evolution allows remote, unauthenticated attackers to predict password reset tokens for any user through the use of a bad randomness function. This allows the attacker to get valid sessions for arbitrary users,

Q: How urgent is CVE-2022-30935?

Priority 55/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.1REMOTEUPGRADE

CVE-2022-30935 is a critical-severity flaw (CVSS 9.1) affecting b2evolution. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An authorization bypass in b2evolution allows remote, unauthenticated attackers to predict password reset tokens for any user through the use of a bad randomness function. This allows the attacker to get valid sessions for arbitrary users, and optionally reset their password. Tested and confirmed in a default installation of version 7.2.3. Earlier versions are affected, possibly earlier major versions as well.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Weakness	CWE-330
Published	2022-09-28
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: b2evolution

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

Am I affected?

Timeline

2022-09-28 11:15 UTCPublished CVE record published
2026-06-17 04:44 UTCUpdated Record last modified

b2evolution b2evolution UPGRADE

Affected: < 7.2.5

Fixed in: 7.2.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy b2evolution || rpm -q b2evolution || b2evolution --version

2. UPGRADE to 7.2.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade b2evolution

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade b2evolution

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2022-30935?

b2evolution: upgrade to 7.2.5. Exact commands for each OS are on this page.

Is CVE-2022-30935 being exploited?

CVE-2022-30935 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-2022-30935 affect?

CVE-2022-30935 affects b2evolution. Severity is critical (CVSS 9.1). An authorization bypass in b2evolution allows remote, unauthenticated attackers to predict password reset tokens for any user through the use of a bad randomness function. This allows the attacker to get valid sessions for arbitrary users,

How urgent is CVE-2022-30935?

Priority 55/100. Critical severity; Remotely exploitable, no login, no user action

References

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