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CVE-2026-78358— Cross-Site Request Forgery in Administrative Actions

Quick assessment

Affected
OTRS GmbH (former OTRS AG) OTRS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

以下漏洞描述信息的中文翻译： --- 若干管理操作未充分验证请求是否由已认证用户有意发起。特别是， 操作可通过 GET 请求触发，而无需验证 ChallengeToken。因此，远程未认证攻击者可以通过在恶意网页中嵌入构造好的请求，促使已认证管理员的浏览器执行该清理操作。成功利用此漏洞可能导致删除现有的 DBUpdate 日志条目，从而降低用于故障排除和审计的诊断及历史信息可用性。其影响仅限于在伪造请求处理时已存在的 DBUpdate 日志条目。 此外，还发现了其他若干未验证 ChallengeToken 的管理端

CVSS 4.3 · Medium EPSS 0.14% · P3

Possible ATT&CK Techniques 1 AI

T1139

Affected Version Matrix 7

VendorProduct Version RangeStatus
OTRS GmbH (former OTRS AG) ((OTRS)) Community Edition 6.x affected
OTRS GmbH (former OTRS AG) OTRS 7.0.x affected
8.0.x affected
2023.x affected
2024.x affected
2025.x affected
2026.x≤ 2026.6.x affected
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I. Basic Information for CVE-2026-78358

Vulnerability Information
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Vulnerability Title
Cross-Site Request Forgery in Administrative Actions
Source: CVE Program / CVE List V5
Vulnerability Description
Several administrative actions do not sufficiently validate whether a request was intentionally initiated by the authenticated user. In particular, the DBUpdateLogCleanUp action can be triggered through a GET request without validating a ChallengeToken. An unauthenticated remote attacker can therefore cause the browser of an authenticated administrator to execute the cleanup action by embedding a crafted request in a malicious web page. Successful exploitation can delete existing DBUpdate log entries. This may reduce the availability of diagnostic and historical information used for troubleshooting and auditing. The impact is limited to DBUpdate log entries that exist at the time the forged request is processed. Additional administrative endpoints were identified that do not validate a ChallengeToken. Some of these endpoints can trigger administrative actions such as deploying or synchronizing already existing configuration. They do not allow an attacker to introduce arbitrary new configuration through the CSRF request itself.  Export and read-only endpoints were also identified without ChallengeToken validation. While these endpoints may be triggered through a forged cross-site request, the response content remains subject to the browser's same-origin restrictions and is not automatically exposed to the attacker. Therefore, no direct confidentiality impact has been demonstrated for these endpoints. This issue affects OTRS: * 7.0.X * 8.0.X * 2023.X * 2024.X * 2025.X * 2026.X before 2026.7.X Please note that ((OTRS)) Community Edition 6.x and before are vulnerable. Products based on the ((OTRS)) Community Edition also very likely to be affected
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
OTRS GmbH (former OTRS AG) OTRS 7.0.x -
OTRS GmbH (former OTRS AG) ((OTRS)) Community Edition 6.x -

II. Public POCs for CVE-2026-78358

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III. Intelligence Information for CVE-2026-78358

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Vendor Advisories for CVE-2026-78358 (1)

Same Patch Batch · OTRS GmbH (former OTRS AG) · 2026-10-12 · 9 CVEs total

CVE-2026-93582 9.4 CRITICAL Authentication Bypass via Spoofed Remote-User Header in HTTP Basic Authentication
CVE-2026-78357 9.1 CRITICAL Insufficient Session Revocation for JWT Authentication
CVE-2026-78355 8.7 HIGH Path Traversal in SendSupportBundle allows File Deletion Outside the Intended Directory
CVE-2026-93581 6.1 MEDIUM Insufficient Neutralization of Formula Elements in CSV Exports
CVE-2026-48211 5.4 MEDIUM Cross-Site Request Forgery in Import/Export Admin console
CVE-2026-78359 5.4 MEDIUM Duplicate Identity / Identity Shadowing across CustomerUser backends
CVE-2026-78356 5.3 MEDIUM Unauthenticated Disclosure of Agent Frontend Configuration
CVE-2026-48212 4.8 MEDIUM Stored XSS in external pages

IV. Related Vulnerabilities

Same product: OTRS
Same vendor: OTRS GmbH (former OTRS AG)
Same weakness: CWE-352

V. Comments for CVE-2026-78358

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