CVE catalog

CVE-2021-44548

lucene-solr affected and fixed versions

An Improper Input Validation vulnerability in DataImportHandler of Apache Solr allows an attacker to provide a Windows UNC path resulting in an SMB network call being made from the Solr host to another host on the network. If the attacker has wider access to the network, this may lead to SMB attacks, which may result in: * The exfiltration of sensitive data such as OS user hashes (NTLM/LM hashes), * In case of misconfigured systems, SMB Relay Attacks which can lead to user impersonation on SMB Shares or, in a worse-case scenario, Remote Code Execution This issue affects all Apache Solr versions prior to 8.11.1. This issue only affects Windows.

Severity: Low
Source: [NVD] · [CVE record]
EPSS: 5.23% · Oct 27, 2026

Projects and upstream resources

[lucene-solr][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Distribution / release	Package	Version	Status	Source
Debiantrixie	lucene-solr	Not reported	Not affectedDistribution reports not affected	[CVE-2021-44548]
Debiantrixie	lucene-solr	`3.6.2+dfsg-26`	Not affected	[CVE-2021-44548]
Debiansid	lucene-solr	Not reported	Not affectedDistribution reports not affected	[CVE-2021-44548]
Debiansid	lucene-solr	`3.6.2+dfsg-28`	Not affected	[CVE-2021-44548]
Debianforky	lucene-solr	Not reported	Not affectedDistribution reports not affected	[CVE-2021-44548]
Debianforky	lucene-solr	`3.6.2+dfsg-28`	Not affected	[CVE-2021-44548]
Debianbookworm	lucene-solr	Not reported	Not affectedDistribution reports not affected	[CVE-2021-44548]
Debianbookworm	lucene-solr	`3.6.2+dfsg-26`	Not affected	[CVE-2021-44548]

Provider details and historical evidence

Distribution / release	Package	Version	Status	Source
Debianbookworm	lucene-solr	Not reported	Not affectedDistribution reports not affected	[CVE-2021-44548]
Debianbookworm	lucene-solr	`3.6.2+dfsg-26`	Not affected	[CVE-2021-44548]
Debianforky	lucene-solr	Not reported	Not affectedDistribution reports not affected	[CVE-2021-44548]
Debianforky	lucene-solr	`3.6.2+dfsg-28`	Not affected	[CVE-2021-44548]
Debiansid	lucene-solr	Not reported	Not affectedDistribution reports not affected	[CVE-2021-44548]
Debiansid	lucene-solr	`3.6.2+dfsg-28`	Not affected	[CVE-2021-44548]
Debiantrixie	lucene-solr	Not reported	Not affectedDistribution reports not affected	[CVE-2021-44548]
Debiantrixie	lucene-solr	`3.6.2+dfsg-26`	Not affected	[CVE-2021-44548]

Original provider fields

{
  "package_releases": [
    {
      "name": "lucene-solr",
      "status": "not affected",
      "release": "sid",
      "version": "3.6.2+dfsg-28"
    },
    {
      "name": "lucene-solr",
      "status": "not affected",
      "release": "forky",
      "version": "3.6.2+dfsg-28"
    },
    {
      "name": "lucene-solr",
      "status": "not affected",
      "release": "trixie",
      "version": "3.6.2+dfsg-26"
    },
    {
      "name": "lucene-solr",
      "status": "not affected",
      "release": "bookworm",
      "version": "3.6.2+dfsg-26"
    }
  ],
  "fixed_versions": [
    {
      "bug": null,
      "name": "lucene-solr",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "unimportant",
      "fixed_version": "0"
    },
    {
      "bug": null,
      "name": "lucene-solr",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "unimportant",
      "fixed_version": "0"
    },
    {
      "bug": null,
      "name": "lucene-solr",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "unimportant",
      "fixed_version": "0"
    },
    {
      "bug": null,
      "name": "lucene-solr",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "unimportant",
      "fixed_version": "0"
    }
  ],
  "distribution_packages": []
}

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[liblucene3-contrib-java]Unknown
Source package: [lucene-solr]
Details (2)
- 3.6.2+dfsg-26 · all · bookworm
  Not affected
  dsa · lucene-solr · debian · bookworm
- 3.6.2+dfsg-26 · all · bookworm
  Not affected
  dsa · lucene-solr · debian · bookworm
[liblucene3-java]Unknown
Source package: [lucene-solr]
Details (2)
- 3.6.2+dfsg-26 · all · bookworm
  Not affected
  dsa · lucene-solr · debian · bookworm
- 3.6.2+dfsg-26 · all · bookworm
  Not affected
  dsa · lucene-solr · debian · bookworm

Observed: Oct 23, 2026, 6:03:44 PM UTC

References

[https://security-tracker.debian.org/tracker/CVE-2021-44548]

[Debian Security Tracker] · [FIRST EPSS]