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Description

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.

PUBLISHED Reserved 2026-02-18 | Published 2026-02-19 | Updated 2026-02-23 | Assigner VulDB




MEDIUM: 5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
LOW: 3.5CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
LOW: 3.5CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
4.0AV:N/AC:L/Au:S/C:N/I:P/A:N/E:POC/RL:ND/RC:UR

Problem types

Open Redirect

Timeline

2026-02-18:Advisory disclosed
2026-02-18:VulDB entry created
2026-02-18:VulDB entry last update

Credits

ZAST.AI (VulDB User) reporter

References

vuldb.com/?id.346661 (VDB-346661 | busy Callback app.js redirect) vdb-entry technical-description

vuldb.com/?ctiid.346661 (VDB-346661 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.753299 (Submit #753299 | busyorg busy <=2.5.5 Open Redirect) third-party-advisory

github.com/busyorg/busy/issues/2287 issue-tracking

github.com/busyorg/busy/issues/2287 exploit issue-tracking

cve.org (CVE-2026-2709)

nvd.nist.gov (CVE-2026-2709)

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