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CVE-2022-36804

From Exploited flaws, HARD’s guide to the flaws being used in attacks · Checked
This article is about a flaw in Atlassian Bitbucket Server and Data Center. For every flaw being used in attacks, see Exploited flaws; for Atlassian’s, see Atlassian flaws being used in attacks.

CVE-2022-36804 is a security flaw in Atlassian Bitbucket Server and Data Center, a wiki companies use for internal documents. Attackers can run their own code on Atlassian Bitbucket Server and Data Center. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 30 Sep 2022.[1]

Atlassian Bitbucket Server and Data Center is business software or equipment. Most families won’t have it, but attackers break into it to get inside companies, and from there to what those companies hold about their customers, patients and staff. Fixed in version unspecified, 7.6.17, 7.17.10 and 7.21.4 and others of Bitbucket Server.

Description

CISA calls it a command injection in Atlassian Bitbucket Server and Data Center. In its words: “Multiple API endpoints of Atlassian Bitbucket Server and Data Center contain a command injection vulnerability where an attacker with access to a public Bitbucket repository, or with read permissions to a private one, can execute code by sending a malicious HTTP request.”[1]

The CVE record adds: “Multiple API endpoints in Atlassian Bitbucket Server and Data Center 7.0.0 before version 7.6.17, from version 7.7.0 before version 7.17.10, from version 7.18.0 before version 7.21.4, from version 8.0.0 before version 8.0.3, from version 8.1.0 before version 8.1.3, and from version 8.2.0 before version 8.2.2, and from version 8.3.0 before 8.3.1 allows remote attackers with read permissions to a public or private Bitbucket repository to execute arbitrary code by sending a malicious HTTP request. This vulnerability was reported via our Bug Bounty Program by TheGrandPew.”[2]

The underlying weakness is OS command injection (CWE-78), CWE-88, CWE-158, in MITRE’s list of common software weaknesses.

It scores 8.8 out of 10 on the Common Vulnerability Scoring System, which rates it high, scored by NVD using CVSS 3.1.[2]

Affected versions

NVD’s record lists these fixed versions: in each line, everything before the version shown is affected.[2]

ProductFixed in
Bitbucket Serverunspecified
Bitbucket Server7.6.17
Bitbucket Server7.17.10
Bitbucket Server7.21.4
Bitbucket Server8.0.3
Bitbucket Server8.1.3
Bitbucket Server8.2.2
Bitbucket Server8.3.1

Most families won’t have Atlassian Bitbucket Server and Data Center; it’s for whoever looks after IT at work.

Exploitation

CISA added it to its catalog of known exploited vulnerabilities on 30 Sep 2022, 36 days after it was made public. CISA lists a flaw only when it has reliable evidence of it being exploited, and gave US federal agencies until 21 Oct 2022 to fix it.[1]

FIRST’s Exploit Prediction Scoring System, which estimates how likely a flaw is to be used in attacks in the next 30 days from what it sees across the internet, puts it at 99%. That’s in the top 1% of the flaws it scores.[4]

CISA assesses it as not automatable: each attack takes some work.

CISA doesn’t say who was attacked, or how.

Fix

Atlassian has published a fix or advice.[3] CISA’s required action: “Apply updates per vendor instructions.”[1]

  1. Check whether you use it.Atlassian Bitbucket Server and Data Center is business software or equipment, so most families won’t have it. If you run a business, or work from home on company equipment, ask whoever looks after your IT.
  2. Send this page to your IT person.Ask them to confirm it’s fixed (fixed in version unspecified, 7.6.17, 7.17.10 and 7.21.4 and others of Bitbucket Server), or not in use. CISA gave US government agencies until 21 Oct 2022 to fix it.
  3. If it can’t be fixed, take it offline.CISA’s advice when there’s no fix is to stop using the product, or take it off the internet, until there is one.

You can’t fix someone else’s server, but you can watch for what follows a break-in like this: a breach notice, a password reset you didn’t ask for, or a scam message that knows things it shouldn’t. HARD watches for those for you and your family.

Timeline

DateEvent
The flaw is made public in the National Vulnerability Database, with a severity score of 8.8.[2]
CISA adds it to its catalog of flaws known to be used in attacks.[1]
CISA’s deadline for US government agencies to fix it.[1]
FIRST puts the odds of it being used in attacks in the next 30 days at 99%.[4]

See also

Other Atlassian flaws

  • CVE-2026-21589, Atlassian products: files or directories accessible to external parties ·
  • CVE-2021-26086, Atlassian Jira Server and Data Center: path traversal ·
  • CVE-2023-22527, Atlassian Confluence Data Center and Server: template injection ·
  • CVE-2023-22518, Atlassian Confluence Data Center and Server: improper authorization ·
  • CVE-2023-22515, Atlassian Confluence Data Center and Server: broken access control ·

Other OS command injection flaws

  • CVE-2026-110447, Collabora Online – Built-in CODE Server: online – built-in CODE server OS command injection ·
  • CVE-2026-106931, EG Secure Solutions SiteGuard Server Edition: OS command injection ·
  • CVE-2026-83549, SonicWall SMA1000 Appliances: OS command injection ·
  • CVE-2026-49869, Kestra OSS: OSS OS command injection ·
  • CVE-2026-73570, Synacor Zimbra Collaboration Suite (ZCS): OS command injection ·

Added the same day

  • CVE-2022-41082, Microsoft Exchange Server: remote code execution ·
  • CVE-2022-41040, Microsoft Exchange Server: server-side request forgery ·

Every Atlassian flaw on CISA’s list · Everything added in September 2022

References

  1. ^ Cybersecurity and Infrastructure Security Agency. “Atlassian Bitbucket Server and Data Center Command Injection Vulnerability”. Known Exploited Vulnerabilities Catalog, added 30 Sep 2022.
  2. ^ National Institute of Standards and Technology. “CVE-2022-36804 Detail”. National Vulnerability Database, published 25 Aug 2022.
  3. ^ Atlassian. Advisories and fixes: jira.atlassian.com.
  4. ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.991, percentile 99.9, 31 Oct 2026.
  5. CVE Program. “CVE-2022-36804”. The official CVE record.

This article is built from CISA’s catalog (version 2026.10.30), NVD’s record and FIRST’s scores, kept in HARD’s database and checked every morning. The plain English is HARD’s.