CVE-2020-10199
CVE-2020-10199 is a security flaw in Sonatype Nexus Repository. Attackers can run their own code on Sonatype Nexus Repository. The US Cybersecurity and Infrastructure Security Agency (CISA) added it to its catalog of flaws known to be used in attacks on 3 Nov 2021.[1]
Sonatype Nexus Repository 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. Sonatype has published a fix or advice.
Description
CISA calls it a remote code execution in Sonatype Nexus Repository. In its words: “Sonatype Nexus Repository contains an unspecified vulnerability that allows for remote code execution.”[1]
The underlying weakness is CWE-917, in MITRE’s list of common software weaknesses.[2]
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 doesn’t list version ranges for it; Sonatype’s advisory has them[3]. CISA names the product as Sonatype Nexus Repository.
Most families won’t have Sonatype Nexus Repository; it’s for whoever looks after IT at work.
Exploitation
CISA added it to its catalog of known exploited vulnerabilities on 3 Nov 2021, 581 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 3 May 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
Sonatype has published a fix or advice.[3] CISA’s required action: “Apply updates per vendor instructions.”[1]
- Check whether you use it.Sonatype Nexus Repository 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.
- Send this page to your IT person.Ask them to confirm it’s fixed, or not in use. CISA gave US government agencies until 3 May 2022 to fix it.
- 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
| Date | Event |
|---|---|
| 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 Sonatype flaws
- CVE-2019-7238, Sonatype Nexus Repository Manager: incorrect access control ·
Similar flaws
- CVE-2021-45046, Apache Log4j2: deserialization of untrusted data ·
- CVE-2022-26134, Atlassian Confluence Server/Data Center: confluence server and data center remote code execution ·
- CVE-2021-26084, Atlassian Confluence Server and Data Center: object-graph navigation language (OGNL) injection ·
- CVE-2020-17530, Apache Struts: remote code execution ·
Added the same day
- CVE-2021-42258, BQE BillQuick Web Suite: SQL injection ·
- CVE-2021-42013, Apache HTTP Server: path traversal ·
- CVE-2021-41773, Apache HTTP Server: path traversal ·
- CVE-2021-40539, Zoho ManageEngine: aDSelfService plus authentication bypass ·
- CVE-2021-40444, Microsoft MSHTML: remote code execution ·
References
- ^ Cybersecurity and Infrastructure Security Agency. “Sonatype Nexus Repository Remote Code Execution Vulnerability”. Known Exploited Vulnerabilities Catalog, added 3 Nov 2021.
- ^ National Institute of Standards and Technology. “CVE-2020-10199 Detail”. National Vulnerability Database, published 1 Apr 2020.
- ^ Sonatype. Advisories and fixes: support.sonatype.com.
- ^ FIRST. “Exploit Prediction Scoring System”. EPSS 0.991, percentile 99.9, 31 Oct 2026.
- CVE Program. “CVE-2020-10199”. 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.