CVE-2024-22893: OpenSlides 4.0.15 verifies passwords by comparing password hashes using a function with content-dependent runt

Routine

HIGH 7.5REMOTEDOWNGRADE

CVE-2024-22893 is a high-severity flaw (CVSS 7.5) affecting openslides. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenSlides 4.0.15 verifies passwords by comparing password hashes using a function with content-dependent runtime. This can allow attackers to obtain information about the password hash using a timing attack.

Why this priority

High severity
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-269
Published	2024-09-25
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: openslides

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

Am I affected?

Timeline

2024-09-25 15:15 UTCPublished CVE record published
2026-06-17 07:11 UTCUpdated Record last modified

openslides openslides DOWNGRADE

Affected: 4.0.15

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.0.15

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.0.15 (Debian / Ubuntu)

apt-cache madison openslides sudo apt install openslides=<VERSION_BEFORE_4.0.15> sudo apt-mark hold openslides

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list openslides sudo dnf downgrade openslides-<VERSION_BEFORE_4.0.15> sudo dnf versionlock add openslides

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-2024-22893?

openslides: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-22893 being exploited?

CVE-2024-22893 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-2024-22893 affect?

CVE-2024-22893 affects openslides. Severity is high (CVSS 7.5). OpenSlides 4.0.15 verifies passwords by comparing password hashes using a function with content-dependent runtime. This can allow attackers to obtain information about the password hash using a timing attack.

How urgent is CVE-2024-22893?

Priority 39/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-25519 HIGH 8.1 UPGRADE OpenSlides is a free, web based presentation and assembly system for managing and projecting agenda, motions a
CVE-2024-22892 HIGH 7.5 DOWNGRADE OpenSlides 4.0.15 was discovered to be using a weak hashing algorithm to store passwords.

References

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