CVE-2021-26085

mediumpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.999 · 100 %ileexploit · PoCEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 2 exploits · PoC

Likely / severe?

99.9% (100th) EPSS

CVSS 5 · medium

Is it mine?

12 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2022-03-28remediate by 2022-04-18

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-26

Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability

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.

cvss

Technical severity, 0–10. One row per scoring source.

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 1.4

v3.15.3mediumAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · ENISA EU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondaryexploitability 3.9 · impact 1.4

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-425USprimaryCWE-862US

ATT&CK techniques

ATT&CK techniques this enables or maps to.

exploits (2)

Public proof-of-concept and weaponised exploit code.

EDB-50377Atlassian Confluence 7.12.2 - Pre-Authorization Arbitrary File ReadPoC · exploit_db
ColdFusionX/CVE-2021-26085Atlassian Confluence Server 7.5.1 Pre-Authorization Arbitrary File Read vulnerability (CVE-2021-26085)PoC · poc_in_github

affected products (12)

Products and version ranges known to be affected.

Atlassian Confluence Data Center7.5.0 → unspecifiedenisa_euvdEU
Atlassian Confluence Data Centerunspecified → 7.12.3enisa_euvdEU
Atlassian Confluence Data Centerunspecified → 7.4.10enisa_euvdEU
Atlassian Confluence Server7.5.0 → unspecifiedenisa_euvdEU
Atlassian Confluence Serverunspecified → 7.12.3enisa_euvdEU
Atlassian Confluence Serverunspecified → 7.4.10enisa_euvdEU
Atlassian Confluence Server≤ 7.4.10fstec_bduRU
Atlassian Confluence Server7.5.0 → 7.12.3fstec_bduRU
atlassian confluence data center< 7.4.10nvdUScpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
atlassian confluence data center7.5.0 → 7.12.3nvdUScpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
atlassian confluence server< 7.4.10nvdUScpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
atlassian confluence server7.5.0 → 7.12.3nvdUScpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2021-08-03modified 2026-06-17

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references (9)

External citations — patches, advisories, analysis.

scry

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