CVE-2026-28510

Q: How do I fix CVE-2026-28510?

Upgrade elabftw to 5.4.2 or later.

Q: Is CVE-2026-28510 being actively exploited?

Not that we know of. CVE-2026-28510 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.25% is the estimated probability that it will be exploited in the next 30 days. That is higher than 17% of all scored CVEs.

Q: How severe is CVE-2026-28510?

CVE-2026-28510 has a CVSS v3 base score of 5.9, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-28510 affect?

Published advisories record a fix for elabftw (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

MEDIUM

5.9

CVSS v3

NVD

Description

eLabFTW is an open source electronic lab notebook. In elabftw versions through 5.4.1, the login flow did not reliably preserve the multi-factor authentication state across authentication steps. Under certain conditions, an attacker with valid primary credentials could complete authentication with an attacker-controlled TOTP secret and bypass the additional factor. This could result in unauthorized account access. This issue is fixed in version 5.4.2.

CWE-302

How to fix

Remediation Available

elabftwNVD

Affected:< 5.4.2Fixed in:5.4.2CVE-2026-28510derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N

Exploit Intelligence

0.25%probability of exploitation in 30 days

17thpercentile

Low risk: more likely to be exploited than 17% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

github.com

Related Vulnerabilities

Other CWE-302 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-43441	Critical	9.8	70%	-	Fix
CVE-2024-4024	High	7.3	15%	-	Fix
CVE-2016-9482	Critical	9.8	4.7%	-	-
CVE-2025-29813	Critical	10.0	1.7%	-	-
CVE-2020-15074	High	7.5	1.0%	-	Fix
CVE-2024-49056	High	7.3	1.0%	-	-

Common questions

How do I fix CVE-2026-28510?

Upgrade elabftw to 5.4.2 or later.

Is CVE-2026-28510 being actively exploited?

Not that we know of. CVE-2026-28510 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.25% is the estimated probability that it will be exploited in the next 30 days. That is higher than 17% of all scored CVEs.

How severe is CVE-2026-28510?

CVE-2026-28510 has a CVSS v3 base score of 5.9, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-28510 affect?

Published advisories record a fix for elabftw (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-28510

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-12.