How severe is CVE-2026-2551?

CVE-2026-2551 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2026-2551 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-2551?

CVE-2026-2551 affects Zentao. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-2551?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-2551 have an EU (EUVD) identifier?

Yes. CVE-2026-2551 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6094.

When was CVE-2026-2551 published?

CVE-2026-2551 was published on 2026-02-16 and last updated on 2026-06-17.

CVE-2026-2551

CVE-2026-2551 is a medium-severity vulnerability in Zentao with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 5.5
CVSS v4: 2.1
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-6094
Weakness: CWE-22
Affected product: Zentao
Published: 2026-02-16
Last modified: 2026-06-17

Description

A vulnerability was determined in ZenTao up to 21.7.8. Affected by this vulnerability is the function delete of the file editor/control.php of the component Backup Handler. This manipulation of the argument fileName causes path traversal. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.

Frequently asked questions

What is CVE-2026-2551?: A vulnerability was determined in ZenTao up to 21.7.8. Affected by this vulnerability is the function delete of the file editor/control.php of the component Backup Handler. This manipulation of the argument fileName causes path traversal. It is possible to initiate the attack remotely. The exploit has been publicly disclosed and may be utilized.
How severe is CVE-2026-2551?: CVE-2026-2551 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2026-2551 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-2551?: CVE-2026-2551 affects Zentao. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-2551?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-2551 have an EU (EUVD) identifier?: Yes. CVE-2026-2551 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6094.
When was CVE-2026-2551 published?: CVE-2026-2551 was published on 2026-02-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:zentao:zentao:*:*:*:*:*:*:*:*

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