CVE-2026-34576 | gitroomhq postiz-app up to 2.21.2 upload-from-url axios.get server-side request forgery

VDB-354967 · CVE-2026-34576 · GCVE-0-2026-34576 GITROOMHQ POSTIZ-APP UP TO 2.21.2 UPLOAD-FROM-URL AXIOS.GET SERVER-SIDE REQUEST FORGERY HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.0 $0-$5k 1.02+ Summaryinfo A vulnerability marked as critical has been reported in gitroomhq postiz-app up to 2.21.2. This affects the function axios.get of the file /public/v1/upload-from-url. This manipulation causes server-side request forgery. This vulnerability is tracked as CVE-2026-34576. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component. Detailsinfo A vulnerability was found in gitroomhq postiz-app up to 2.21.2. It has been declared as critical. Affected by this vulnerability is the function axios.get of the file /public/v1/upload-from-url. The manipulation with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is: Postiz is an AI social media scheduling tool. Prior to version 2.21.3, the POST /public/v1/upload-from-url endpoint accepts a user-supplied URL and fetches it server-side using axios.get() with no SSRF protections. The only validation is a file extension check (.png, .jpg, etc.) which is trivially bypassed by appending an image extension to any URL path. An authenticated API user can fetch internal network resources, cloud instance metadata, and other internal services, with the response data uploaded to storage and returned to the attacker. This issue has been patched in version 2.21.3. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-34576 since 03/30/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. Upgrading to version 2.21.3 eliminates this vulnerability. Productinfo Vendor gitroomhq Name postiz-app Version 2.21.0 2.21.1 2.21.2 Website Product: https://github.com/gitroomhq/postiz-app/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 6.3 VulDB Meta Temp Score: 6.0 VulDB Base Score: 6.3 VulDB Temp Score: 6.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Server-side request forgery CWE: CWE-918 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: postiz-app 2.21.3 Timelineinfo 03/30/2026 CVE reserved 04/02/2026 +3 days Advisory disclosed 04/02/2026 +0 days VulDB entry created 04/02/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: github.com Status: Confirmed CVE: CVE-2026-34576 (🔒) GCVE (CVE): GCVE-0-2026-34576 GCVE (VulDB): GCVE-100-354967 Entryinfo Created: 04/02/2026 19:39 Changes: 04/02/2026 19:39 (68) Complete: 🔍 Cache ID: 99:481:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸