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Vulnerability Database · Debian · Package report

claws-mail: vulnerability history, versions and safety

claws-mail is a package in the Debian ecosystem. Vulert records 19 vulnerabilities for it across 25 releases, from Dec 2007 to Jul 2021. Each vulnerability names the versions it affects, the fixed version to move to, and a workaround where no fix has been published.

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19 vulnerabilities recorded U19
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3 with no fix published

No patched version yet — these are the ones to plan around.

See the unfixed vulnerabilities →
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0 in the last 12 months

Nothing new recorded in the last year.

See the disclosure history →
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0 malicious-package vulnerabilities

No published version shipped hostile code.

See all claws-mail vulnerabilities

Vulert verdict on claws-mail i

Updated on 23 Oct 2026

Careful: 3 of the 19 vulnerabilities Vulert records for this package have no fix yet. Plan around those, or apply the workaround listed for each. The rest have a fixed version to move to.

Long-term outlook: usable, but needs attention 19 vulnerabilities on record across 13 years, none in the last year.

What to do: Plan around the 3 vulnerabilities with no published fix: each lists the affected range and any workaround that reduces exposure. No fix yet: Vulert alerts you the moment one is published. Monitor it with Vulert →

  • Vulnerabilities on record 19 over 13 years · 0 in the last year i
  • Latest disclosure 30 Jul 2021 i
  • Highest CVSS 9.8 i
  • With no published fix 3 i

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01 Versions

Which versions are affected

Every version Vulert holds for claws-mail, newest first, with the vulnerabilities that name it. A version with a count of zero has no recorded vulnerabilities; open a version to see the vulnerabilities it is exposed to.

Newest 25 of 25 versions on record. Severity counts are the vulnerabilities recorded against that exact release.

02 Disclosure history

How often vulnerabilities are recorded

  • 2007 2
  • 2012 2
  • 2014 4
  • 2016 4
  • 2019 2
  • 2020 4
  • 2021 1

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 0 of the 19 were recorded in the last 12 months.

03 Vulnerabilities

Recorded vulnerabilities for claws-mail

The 5 most severe of 19 vulnerabilities recorded for this package

Search all 19 in the database →
Vulnerability Severity Fixed version ↓ Disclosed ↓
Claws Mail STARTTLS Protocol Violation Vulnerability (CVE-2020-15917) 9.8 critical 3.17.6-1 23 Jul 2020
Claws Mail IMAP Server Stack Consumption Vulnerability (CVE-2020-16094) 7.5 high 3.17.7-1 28 Jul 2020
Buffer Overflow Vulnerability in Claws Mail 3.13.1: Remote Code Execution Risk 7.3 high 3.13.1-1.1 11 Apr 2016
Buffer Overflow Vulnerability in Claws Mail and Macopix - CVE-2015-8614 7.3 high 3.13.1-1 11 Apr 2016
Claws Mail and Sylpheed URI Security Vulnerability 6.1 medium No fix published 30 Jul 2021

Vulnerability wrong, a fix missing, or a package we should cover? Report it and we will fix the record. Report Vulnerability Provide Feedback

Updated: 23/Oct/2026 · Vulnerabilities in our DB: 524315

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Questions

About claws-mail

Is claws-mail safe to use?

Vulert records 19 vulnerabilities for claws-mail in Debian: 0 critical, 0 high, 0 medium and 0 low, plus 19 not yet rated. 3 of them have no published fix yet, so those are the ones to avoid or mitigate.

How many vulnerabilities does claws-mail have?

19 vulnerabilities are recorded for claws-mail in the Debian ecosystem: 0 critical, 0 high, 0 medium and 0 low, plus 19 not yet rated. The ledger on this page lists the same counts next to the date of the most recent disclosure.

How often are new claws-mail vulnerabilities disclosed?

0 vulnerabilities were recorded for claws-mail in the last 12 months, and the oldest entry in this database dates to 04 Dec 2007. Recency matters more than a lifetime total: it shows how actively new issues are being disclosed for the package you are considering.

Which versions of claws-mail are affected?

Each vulnerability on this page lists the affected version range and the fixed version to move to. Open the vulnerability for the version you actually run — fixes are specific to a release line, not to the package as a whole.

How do I monitor claws-mail for upcoming vulnerabilities?

Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the claws-mail version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.