CVE-2026-33372 | Zimbra Collaboration Suite 10.0/10.1 Request Header cross-site request forgery

VDB-352084 · CVE-2026-33372 · GCVE-0-2026-33372 ZIMBRA COLLABORATION SUITE 10.0/10.1 REQUEST HEADER CROSS-SITE REQUEST FORGERY HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.3 $0-$5k 1.82+ Summaryinfo A vulnerability described as problematic has been identified in Zimbra Collaboration Suite 10.0/10.1. The impacted element is an unknown function of the component Request Header Handler. Executing a manipulation can lead to cross-site request forgery. The identification of this vulnerability is CVE-2026-33372. The attack may be launched remotely. There is no exploit available. Detailsinfo A vulnerability has been found in Zimbra Collaboration Suite 10.0/10.1 and classified as problematic. This vulnerability affects an unknown code block of the component Request Header Handler. The manipulation with an unknown input leads to a cross-site request forgery vulnerability. The CWE definition for the vulnerability is CWE-352. The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. As an impact it is known to affect integrity. CVE summarizes: An issue was discovered in Zimbra Collaboration (ZCS) 10.0 and 10.1. A cross-site request forgery (CSRF) vulnerability exists in Zimbra Webmail due to improper validation of CSRF tokens. The application accepts CSRF tokens supplied within the request body instead of requiring them through the expected request header. An attacker can exploit this issue by tricking an authenticated user into submitting a crafted request. This may allow unauthorized actions to be performed on behalf of the victim. The advisory is shared for download at wiki.zimbra.com. This vulnerability was named CVE-2026-33372 since 03/19/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Type Groupware Software Vendor Zimbra Name Collaboration Suite Version 10.0 10.1 CPE 2.3info 🔒 🔒 CPE 2.2info 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.3 VulDB Meta Temp Score: 4.3 VulDB Base Score: 4.3 VulDB Temp Score: 4.3 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: Cross-site request forgery CWE: CWE-352 / CWE-862 / CWE-863 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: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 03/19/2026 CVE reserved 03/20/2026 +1 days Advisory disclosed 03/20/2026 +0 days VulDB entry created 03/20/2026 +0 days VulDB entry last update Sourcesinfo Advisory: wiki.zimbra.com Status: Confirmed CVE: CVE-2026-33372 (🔒) GCVE (CVE): GCVE-0-2026-33372 GCVE (VulDB): GCVE-100-352084 Entryinfo Created: 03/20/2026 15:47 Changes: 03/20/2026 15:47 (54) Complete: 🔍 Cache ID: 99:915:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸