CVE-2026-27477

MEDIUM
中文标题:
（暂无数据）
英文标题:
Mastodon has SSRF via unvalidated FASP Provider base_url
CVSS分数: 4.6
发布时间: 2026-02-24 19:00:20
漏洞类型: （暂无数据）
状态: PUBLISHED
数据质量分数: 0.40
数据版本: v3
漏洞描述
中文描述:

（暂无数据）

英文描述:

Mastodon is a free, open-source social network server based on ActivityPub. FASP registration requires manual approval by an administrator. In versions 4.4.0 through 4.4.13 and 4.5.0 through 4.5.6, an unauthenticated attacker can register a FASP with an attacker-chosen `base_url` that includes or resolves to a local / internal address, leading to the Mastodon server making requests to that address. This only affects Mastodon servers that have opted in to testing the experimental FASP feature by setting the environment variable `EXPERIMENTAL_FEATURES` to a value including `fasp`. An attacker can force the Mastodon server to make http(s) requests to internal systems. While they cannot control the full URL that is being requested (only the prefix) and cannot see the result of those requests, vulnerabilities or other undesired behavior could be triggered in those systems. The fix is included in the 4.4.14 and 4.5.7 releases. Admins that are actively testing the experimental "fasp" feature should update their systems. Servers not using the experimental feature flag `fasp` are not affected.

CWE类型:
CWE-918
标签:
（暂无数据）
受影响产品
厂商 产品 版本 版本范围 平台 CPE
mastodon mastodon >= 4.4.0, < 4.4.14 - - cpe:2.3:a:mastodon:mastodon:>=_4.4.0,_<_4.4.14:*:*:*:*:*:*:*
mastodon mastodon >= 4.5.0, < 4.5.7 - - cpe:2.3:a:mastodon:mastodon:>=_4.5.0,_<_4.5.7:*:*:*:*:*:*:*
joinmastodon mastodon * - - cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*
解决方案
中文解决方案:
（暂无数据）
英文解决方案:
（暂无数据）
临时解决方案:
（暂无数据）
参考链接
https://github.com/mastodon/mastodon/security/advisories/GHSA-46w6-g98f-wxqm x_refsource_CONFIRM
cve.org
访问
https://github.com/mastodon/mastodon/commit/7b85d2182361e68d51d9a02f94fb1070b5f503b1 x_refsource_MISC
cve.org
访问
CVSS评分详情
4.0 (cna)
MEDIUM
4.6
CVSS向量: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
机密性
NONE
完整性
HIGH
可用性
NONE
后续系统影响 (Subsequent):
机密性
NONE
完整性
NONE
可用性
NONE
时间信息
发布时间:
2026-02-24 19:00:20
修改时间:
2026-02-24 19:00:20
创建时间:
2026-02-25 06:00:01
更新时间:
2026-02-27 06:00:03
利用信息
暂无可利用代码信息
数据源详情
数据源 记录ID 版本 提取时间
CVE cve_CVE-2026-27477 2026-02-25 03:19:54 2026-02-24 22:00:01
NVD nvd_CVE-2026-27477 2026-02-25 02:00:04 2026-02-24 22:00:04
版本与语言
当前版本: v3
主要语言: EN
支持语言:
EN
安全公告
暂无安全公告信息
变更历史
v3 NVD
2026-02-27 06:00:03
affected_products_count: 2 → 3
查看详细变更
  • affected_products_count: 2 -> 3
v2 NVD
2026-02-25 06:00:04
data_sources: ['cve'] → ['cve', 'nvd']
查看详细变更
  • data_sources: ['cve'] -> ['cve', 'nvd']