CVE-2026-2709

LOW 3.5

busy Callback app.js redirect

CVSS Score

3.5

EPSS Score

0.0%

EPSS Percentile

0th

A flaw has been found in busy up to 2.5.5. The affected element is an unknown function of the file source-code/busy-master/src/server/app.js of the component Callback Handler. Executing a manipulation of the argument state can lead to open redirect. It is possible to launch the attack remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

CWE	CWE-601
Vendor	n/a
Product	busy
Published	Feb 19, 2026
Last Updated	Feb 23, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

n/a / busy

2.5.0 2.5.1 2.5.2 2.5.3 2.5.4 2.5.5

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/?id.346661 vuldb.com: https://vuldb.com/?ctiid.346661 vuldb.com: https://vuldb.com/?submit.753299 github.com: https://github.com/busyorg/busy/issues/2287 github.com: https://github.com/busyorg/busy/issues/2287#issue-3905518966

Credits

🔍 ZAST.AI (VulDB User)