A Cross-Site Request Forgery (CSRF) vulnerability has been identified in PILOS, the frontend for BigBlueButton, affecting versions up to 4.10.0. This vulnerability exists in an administrative API endpoint used to terminate all active video conferences on a server. While authorization checks are in place, the use of an HTTP GET request for this destructive action allows for implicit invocation through same-site content, potentially leading to unintended conference terminations.
影响与攻击场景翻译中…
The primary impact of this CSRF vulnerability lies in the potential for unauthorized termination of all active video conferences on a PILOS server. An attacker could leverage this to disrupt ongoing sessions, potentially impacting educational institutions, online training programs, or any organization utilizing BigBlueButton for live online seminars. While the endpoint requires proper authorization, the GET request method allows for implicit triggering through embedded resources or other same-site content, bypassing typical CSRF protections that rely on POST requests. This could lead to denial of service and disruption of critical online events.
利用背景翻译中…
This vulnerability is currently not listed on the CISA KEV catalog. Public proof-of-concept exploits are not widely available, suggesting a low probability of immediate exploitation. The vulnerability was disclosed on 2026-01-12. Given the relatively low CVSS score and the requirement for same-site content manipulation, the risk of widespread exploitation is considered moderate.
哪些人处于风险中翻译中…
Organizations utilizing PILOS as a frontend for BigBlueButton, particularly those with legacy configurations or shared hosting environments, are at risk. Educational institutions, online training providers, and any entity relying on BigBlueButton for live online seminars should prioritize upgrading to the patched version.
攻击时间线
- Disclosure
disclosure
威胁情报
漏洞利用状态
EPSS
0.02% (5% 百分位)
CISA SSVC
CVSS 向量
这些指标意味着什么？
- Attack Vector
- 网络 — 可通过互联网远程利用，无需物理或本地访问。攻击面最大。
- Attack Complexity
- 低 — 无需特殊条件，可以稳定地利用漏洞。
- Privileges Required
- 高 — 需要管理员或特权账户。
- User Interaction
- 需要 — 受害者必须打开文件、点击链接或访问特制页面。
- Scope
- 未改变 — 影响仅限于脆弱组件本身。
- Confidentiality
- 无 — 无机密性影响。
- Integrity
- 无 — 无完整性影响。
- Availability
- 低 — 部分或间歇性拒绝服务。
受影响的软件
弱点分类 (CWE)
时间线
- 已保留
- 发布日期
- 修改日期
- EPSS 更新日期
缓解措施和替代方案翻译中…
The recommended mitigation for CVE-2026-22800 is to upgrade PILOS to version 4.10.0 or later, which addresses the vulnerability. As a temporary workaround, consider implementing strict Content Security Policy (CSP) headers to restrict the sources from which scripts can be executed within the PILOS application. This can help prevent malicious scripts from triggering the vulnerable endpoint. Additionally, review and strengthen server-side input validation to ensure that requests are properly authenticated and authorized before executing any destructive actions. After upgrading, confirm the fix by attempting to trigger the administrative endpoint from a different origin and verifying that the action is blocked.
修复方法翻译中…
Actualice PILOS a la versión 4.10.0 o superior. Esta versión corrige la vulnerabilidad CSRF que permite la terminación no intencionada de videoconferencias. La actualización previene que un administrador autenticado, al visualizar contenido malicioso, active accidentalmente la terminación de todas las videoconferencias activas.
CVE 安全通讯
漏洞分析和关键警报直接发送到您的邮箱。
常见问题翻译中…
What is CVE-2026-22800 — CSRF in PILOS BigBlueButton Frontend?
CVE-2026-22800 is a Cross-Site Request Forgery (CSRF) vulnerability in PILOS versions up to 4.10.0, allowing attackers to potentially terminate all active video conferences on a server via a GET request.
Am I affected by CVE-2026-22800 in PILOS BigBlueButton Frontend?
You are affected if you are using PILOS versions 4.10.0 or earlier. Upgrade to 4.10.0 to mitigate the risk.
How do I fix CVE-2026-22800 in PILOS BigBlueButton Frontend?
Upgrade PILOS to version 4.10.0 or later. As a temporary workaround, implement strict Content Security Policy (CSP) headers.
Is CVE-2026-22800 being actively exploited?
There are currently no reports of active exploitation, but the vulnerability remains a potential risk.
Where can I find the official PILOS advisory for CVE-2026-22800?
Refer to the PILOS project's official security advisories for the most up-to-date information and guidance.