Is jzlib safe to use?

Vulert records 2 vulnerabilities for jzlib in Debian: 0 critical, 0 high, 0 medium and 0 low, plus 2 not yet rated. Every one of them has a published fix, so the practical answer is to run a supported release and keep it patched.

How many vulnerabilities does jzlib have?

2 vulnerabilities are recorded for jzlib in the Debian ecosystem: 0 critical, 0 high, 0 medium and 0 low, plus 2 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 jzlib vulnerabilities disclosed?

0 vulnerabilities were recorded for jzlib in the last 12 months, and the oldest entry in this database dates to 31 Dec 2002. 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 jzlib 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 jzlib for upcoming vulnerabilities?

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

Vulnerability Database · Debian · Package report

jzlib: vulnerability history, versions and safety

jzlib is a package in the Debian ecosystem. Vulert records 2 vulnerabilities for it across 1 affected range, first recorded in Dec 2002. Each vulnerability names the versions it affects, the fixed version to move to, and a workaround where no fix has been published.

2 vulnerabilities recorded U2

0 with no fix published

Every vulnerability has a patched version to move to.

0 in the last 12 months

Nothing new recorded in the last year.

See the disclosure history →

0 malicious-package vulnerabilities

No published version shipped hostile code.

See all jzlib vulnerabilities

Vulert verdict on jzlib i

Updated on 23 Oct 2026

Every vulnerability Vulert records for this package has a fix, and the newest was recorded 31 Dec 2002. Apply the fixes listed below and you are clear.

Long-term outlook: usable, with an upgrade 2 vulnerabilities on record across 1 year, none in the last year.

What to do: Move the affected dependencies to the fixed versions listed below, then keep the package monitored so the next vulnerability reaches you. Fix it, then keep watch: Vulert alerts you when a new vulnerability affects the version you run. Monitor it with Vulert →

Vulnerabilities on record 2 over 1 year · 0 in the last year i
Latest disclosure 31 Dec 2002 i
Highest CVSS n/a i
With no published fix 0 i

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01 Versions

Which versions are affected

Vulert records these vulnerabilities by affected range rather than by individual release, so these are the ranges to check. Filter above to find the version you run.

Affected range	Vulnerabilities
up to 0.0.7 (exclusive)	2

02 Disclosure history

How often vulnerabilities are recorded

2002 2

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 0 of the 2 were recorded in the last 12 months.

Other ways into the data

03 Vulnerabilities

Recorded vulnerabilities for jzlib

Vulnerability	Severity	Fixed version ↓	Disclosed ↓
Denial of Service Vulnerability in JCraft JZlib	N/A unrated	0.0.7	31 Dec 2002
Denial of Service Vulnerability in jzlib Package - CVE-2002-2102	N/A unrated	0.0.7	31 Dec 2002

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