Vulnerability record · CVE-2026-54735 · published 29 July 2026

CVE-2026-54735: Prebid server server-side request forgery (ssrf) vulnerability

Prebid · Prebid Server

Prebid Server is an open-source solution for running real-time advertising auctions in the cloud. Prior to version 4.4.0, certain bidder adapters in Prebid Server interpolate user-supplied parameters into outbound request URLs without properly validating host and subdomain values, allowing crafted bid request parameters to cause server-side requests to unintended destinations and potentially expose internal network services or sensitive server endpoints. This issue is fixed in version 4.4.0.

10.0 CVSS 3.1 Critical EPSS 0.61% · top 52.8% CWE-918 · Server-side request forgery (SSRF)

10.0CVSS 3.1 base score

0.61%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

4References

18 Aug 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Prebid Server Prebid

References

Link	Tags
https://github.com/prebid/prebid-server/commit/494ac271cd4b5024df9123ef25ca3cff96390be3	Patch
https://github.com/prebid/prebid-server/pull/4802	Issue TrackingPatch
https://github.com/prebid/prebid-server/releases/tag/v4.4.0	ProductRelease Notes
https://github.com/prebid/prebid-server/security/advisories/GHSA-4p3g-4hcj-wpvx	PatchVendor Advisory

Track CVE-2026-54735 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2026-83548SonicWall SMA1000 pre-auth SSRF via alternate access pathThe SMA1000 Appliance Work Place interface exposes an unintended alternate access path that allows server-side request forgery before authentication.…KEVEPSS 8.8%analysed1 Sep 2026 10.0CVE-2026-49869Kestra OSS auth bypass via path suffix match enables RCEKestra OSS AuthenticationFilter whitelists the public config endpoint using request.getPath().endsWith("/configs"), a suffix match instead of an exac…KEVEPSS 2.1%analysed26 Jun 2026 9.3CVE-2026-64849MLflow unauthenticated webhook test endpoint SSRF via redirectMLflow before 3.15.0 validates the webhook URL only on the original request, while the delivery code follows redirects and re-resolves the hostname w…KEVEPSS 9.8%analysed17 Aug 2026 10.0CVE-2026-15409SonicWall SMA1000 Work Place SSRF allows unauthenticated requestsThe SMA1000 Appliance Work Place interface contains a server-side request forgery flaw (CWE-918) that lets the appliance be induced to make requests …KEVEPSS 6.8%analysed14 Jul 2026 8.6CVE-2026-20230Cisco Unified CM SSRF enables file write and root escalationCisco Unified Communications Manager and Unified CM SME fail to properly validate input for specific HTTP requests, allowing server-side request forg…KEVEPSS 88%analysed3 Jun 2026 7.5CVE-2021-22054VMware Workspace ONE UEM console unauthenticated SSRFThe Workspace ONE UEM console contains a server-side request forgery flaw in versions 20.0.8 before 20.0.8.37, 20.11.0 before 20.11.0.40, 21.2.0 befo…KEVEPSS 100%analysed17 Dec 2021 9.8CVE-2021-22175GitLab unauthenticated SSRF via internal webhook requestsGitLab is vulnerable to server-side request forgery when requests to the internal network for webhooks are enabled. The flaw affects all versions sta…KEVEPSS 53%analysed11 Jun 2021 9.8CVE-2020-7796Zimbra Collaboration Suite WebEx zimlet SSRFZimbra Collaboration Suite before 8.8.15 Patch 7 is vulnerable to server-side request forgery when the WebEx zimlet is installed and its JSP is enabl…KEVEPSS 84%analysed18 Feb 2020

Source: NIST National Vulnerability Database (record CVE-2026-54735), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.