CVE-2021-26085
Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability…
- Severity
- 5.3 / 10
- Medium · CVSS 3.1
- Exploit chance (EPSS)
- 99.94%
- Chance of exploitation in the next 30 days. Higher than 99.97% of scored vulnerabilities.
- Known exploited
- Yes
- In CISA's catalog since Mar 28, 2022
- Fix
- None yet
- No fixed version published
Description
Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3.
How to fix
No fixed version has been published yet. Until one is, remove or replace the package, or turn off or isolate the affected feature. This page updates when a fix ships.
Severity breakdown
CVSS 3.1 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Weakness
CWE-425: Direct Request ('Forced Browsing')
The web application does not adequately enforce appropriate authorization on all restricted URLs, scripts, or files.
How to prevent it
- Architecture and Design, Operation: Apply appropriate access control authorizations for each access to all restricted URLs, scripts or files.
- Architecture and Design: Consider using MVC based frameworks such as Struts.
CWE-425: Direct Request ('Forced Browsing')
The web application does not adequately enforce appropriate authorization on all restricted URLs, scripts, or files.
How to prevent it
- Architecture and Design, Operation: Apply appropriate access control authorizations for each access to all restricted URLs, scripts or files.
- Architecture and Design: Consider using MVC based frameworks such as Struts.
References
Advisories
Other links
Timeline
- Published
- Added to CISA's Known Exploited Vulnerabilities catalog
- Remediation due for U.S. federal agencies
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-46xh-7854-f568 Concrete CMS is vulnerable to authorization bypass in the Calendar Block | Medium | Same weakness, CWE-425 |
| GHSA-hm32-hfmw-rhvg Keycloak has a Forced Browsing issue | Medium | Same weakness, CWE-425 |
| GHSA-53mr-6c8q-9789 LiteLLM: Privilege escalation via unrestricted proxy configuration endpoint | High | Same weakness, CWE-425 |
| GHSA-g6pg-52vf-843h MLFlow allows Tracing + Assessments Access | High | Same weakness, CWE-425 |
| GHSA-jxxm-27vp-c3m5 NATS allows MQTT clients to bypass ACL checks | Medium | Same weakness, CWE-425 |
| GO-2026-4601 Incorrect parsing of IPv6 host literals in net/url | High | Same weakness, CWE-425 |
| GHSA-h3vp-qwmx-5j25 Grokability Snipe-IT has incorrect authorization for accessing asset information | Low | Same weakness, CWE-425 |
| CVE-2024-45195 Apache OFBiz: Confused controller-view authorization logic (forced browsing) | High Known exploited | Same weakness, CWE-425 |
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