OneUptime has WhatsApp Resend Verification Authorization Bypass

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

OneUptime is a solution for monitoring and managing online services. The resend-verification-code endpoint allows any authenticated user to trigger a verification code resend for any UserWhatsApp record by ID. Ownership is not validated (unlike the verify endpoint). This affects the UserWhatsAppAPI.ts endpoint and the UserWhatsAppService.ts service.

Source published

10 Mar 2026 17:06:33 UTC

Source modified

10 Mar 2026 17:59:05 UTC

Observed here

23 Oct 2026 15:48:27 UTC

Source terms

CVE Program Terms of Use

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

OneUptime is a solution for monitoring and managing online services. The resend-verification-code endpoint allows any authenticated user to trigger a verification code resend for any UserWhatsApp record by ID. Ownership is not validated (unlike the verify endpoint). This affects the UserWhatsAppAPI.ts endpoint and the UserWhatsAppService.ts service.

Source published

Mar 10, 2026, 5:06:33 PM (timezone not stated)

Source modified

Mar 10, 2026, 5:59:05 PM (timezone not stated)

Observed here

11 Nov 2026 08:28:09 UTC

Source terms

ENISA EUVD · source terms and attribution apply

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 4.0 · 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

OneUptime is a solution for monitoring and managing online services. The resend-verification-code endpoint allows any authenticated user to trigger a verification code resend for any UserWhatsApp record by ID. Ownership is not validated (unlike the verify endpoint). This affects the UserWhatsAppAPI.ts endpoint and the UserWhatsAppService.ts service.

Source published

10 Mar 2026 18:18:55 UTC

Source modified

7 Oct 2026 08:10:00 UTC

Observed here

25 Oct 2026 07:19:14 UTC

Source terms

NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · [email protected] · Secondary · 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS 3.1 · [email protected] · Primary · 5.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L

### Description The resend-verification-code endpoint allows any authenticated user to trigger a verification code resend for any `UserWhatsApp` record by ID. Ownership is not validated (unlike the verify endpoint). ### Affected Source - Endpoint: [UserWhatsAppAPI.ts](https://github.com/OneUptime/oneuptime/Common/Server/API/UserWhatsAppAPI.ts#L129-L153) - Service: [UserWhatsAppService.ts](https://github.com/OneUptime/oneuptime/Common/Server/API/UserWhatsAppAPI.ts#L129-L153) - Verify ownership (present in verify endpoint for comparison): [UserWhatsAppAPI.ts](https://github.com/OneUptime/oneuptime/Common/Server/API/UserWhatsAppAPI.ts#L78-L87) ### Full Code Lines (UserWhatsAppAPI.ts) Resend path (authorization gap): ```ts this.router.post( `${new this.entityType() .getCrudApiPath() ?.toString()}/resend-verification-code`, UserMiddleware.getUserMiddleware, async (req: ExpressRequest, res: ExpressResponse, next: NextFunction) => { try { req = req as OneUptimeRequest; if (!req.body.itemId) { return Response.sendErrorResponse( req, res, new BadDataException("Invalid item ID"), ); } await this.service.resendVerificationCode(req.body.itemId); return Response.sendEmptySuccessResponse(req, res); } catch (err) { return next(err); } }, ); ``` Verify path (ownership check present): ```ts if ( item.userId?.toString() !== (req as OneUptimeRequest)?.userAuthorization?.userId?.toString() ) { return Response.sendErrorResponse( req, res, new BadDataException("Invalid user ID"), ); } ``` ## Prerequisites - Valid attacker account with access to a project - Attacker access token - A victim’s `UserWhatsApp` itemId belonging to the same project ## Steps to Reproduce 1. Set your attacker token: ```bash export ATK="Bearer <attacker-access-token>" ``` 2. Trigger resend for the victim’s item: ```bash curl -s -X POST \ -H "Content-Type: application/json" \ -H "Authorization: $ATK" \ -d '{"itemId":"<victim-userwhatsapp-id>"}' \ http://<host>/api/user-whats-app/resend-verification-code ``` ## Expected/Observed Behavior - HTTP 200 with `{}` body and a new verification code sent to the victim’s phone - No checks confirm that `item.userId` equals the authenticated user’s ID for the resend path ## Impact - Spam/DoS against victims’ phone numbers, social engineering pressure, and potential lockout flows due to repeated resends ## Recommended Fix - Enforce ownership: `item.userId` must match the authenticated user - Add per-item and per-user rate limiting for resends

Source published

10 Mar 2026 01:15:30 UTC

Source modified

10 Mar 2026 19:01:32 UTC

Observed here

24 Oct 2026 13:17:17 UTC

Source terms

GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V4 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L

Publisher rating · MODERATE