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No exploitation reportedFix available

CVE-2019-16228

No exploitation reported by the sources we read.

  • Published2019-09-11
  • Fixed in0.98
  • WeaknessCWE-369

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An issue was discovered in py-lmdb 0.97. There is a divide-by-zero error in the function mdb_env_open2 if mdb_env_read_header obtains a zero value for a certain size field. NOTE: this outcome occurs when accessing a data.mdb file supplied by an attacker.

Timeline

dates in UTC
  1. 2019-09-1115:15CVE publishedNVD

Versions per branch

OSV · NVD
lmdb
BranchAffectedFixed in
0.98< 0.980.98
0.97≤ 0.97no fix published
Py-lmdb project py-lmdb
BranchAffectedFixed in
0.97≤ 0.97no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • lmdbEchoall versions · fixed in 0.9.31-1+e2
  • lmdbDebian:14all versions · no fixed version listedand 1 other package
  • lmdbDebian:13all versions · no fixed version listedand 1 other package
  • lmdbDebian:12all versions · no fixed version listedand 1 other package
  • py-lmdbUbuntu:26.10all versions · no fixed version listed
  • py-lmdbUbuntu:26.04:LTSall versions · no fixed version listed
  • py-lmdbUbuntu:25.10all versions · no fixed version listed
  • py-lmdbUbuntu:24.04:LTSall versions · no fixed version listed

5 more package ranges on OSV.dev

Vendor advisories

  • CVE-2019-16228 Red Hat Product Security

    python-lmdb: division by zero in mdb_env_open2 in lib/mdb.c

Full record on NVD

Fix

  1. Update lmdb to 0.98

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2019-09-11
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-ggwq-vrgp-6gv4

Frequently asked questions

What is CVE-2019-16228?

An issue was discovered in py-lmdb 0.97. There is a divide-by-zero error in the function mdb_env_open2 if mdb_env_read_header obtains a zero value for a certain size field. NOTE: this outcome occurs when accessing a data.mdb file supplied by an attacker.

Is CVE-2019-16228 actively exploited?

Active exploitation of CVE-2019-16228 has not been confirmed. Its EPSS score was 1.8% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-16228?

CVE-2019-16228 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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