UnratedFix available

DEBIAN-CVE-2026-82617

Type: advisorySource: OSV1 source record

The two built-in name-finder patterns exposed by opennlp.tools.namefind.RegexNameFinderFactory - DEFAULT_REGEX_NAME_FINDER.EMAIL and DEFAULT_REGEX_NAME_FINDER.URL - contain ambiguous nested quantifiers. An application that obtains these finders through RegexNameFinderFactory.getDefaultRegexNameFinders(...) and then applies them to untrusted text through RegexNameFinder.find(String[]) or RegexNameFinder.find(String) can be driven into super-linear backtracking or into unbounded matcher recursion by a small crafted input. For the EMAIL pattern, a long run of local-part characters that is never followed by an @ forces the matcher to re-scan to end-of-input from every starting offset. Cost grows quadratically with input length: an input of approximately 32 KB consumes several seconds of CPU in a single find() call and returns no match, and each doubling of the input multiplies the cost roughly four-fold. For the URL pattern, the query-string sub-expression nests a capturing repetition inside an outer repetition. The JDK matcher recurses once per query token, so an input of approximately 4 KB containing many &-separated tokens exhausts the thread stack and causes java.lang.StackOverflowError to propagate out of find(), terminating the calling thread. On a thread created with a smaller stack (for example -Xss512k, typical of server worker pools) approximately 1 KB is sufficient. In both cases an attacker who can supply text for analysis can convert a single request into seconds to

Announced 11 Sept 2026Source revision 1

Original source ↗

DEBIAN-CVE-2026-82617

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-82617

apache-opennlp

Source reference: /affected/0/package/name

Affected versions: 2.1.0-1
Source reference: /affected/0/versions
2.2.0-1
Source reference: /affected/0/versions
2.2.0-1~exp
Source reference: /affected/0/versions
2.3.0-1
Source reference: /affected/0/versions
2.3.1-1
Source reference: /affected/0/versions
2.3.1-2
Source reference: /affected/0/versions
2.3.2-1
Source reference: /affected/0/versions
2.3.3-1
Source reference: /affected/0/versions
2.4.0-1
Source reference: /affected/0/versions
2.5.0-1
Source reference: /affected/0/versions
2.5.1-1
Source reference: /affected/0/versions
2.5.12-1
Source reference: /affected/0/versions
2.5.2-1
Source reference: /affected/0/versions
2.5.3-1
Source reference: /affected/0/versions
2.5.9-1
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

apache-opennlp

Source reference: /affected/1/package/name

Affected versions: 2.5.12-1
Source reference: /affected/1/versions
2.5.3-1
Source reference: /affected/1/versions
2.5.9-1
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

apache-opennlp

Source reference: /affected/2/package/name

Affected versions: 2.5.3-1
Source reference: /affected/2/versions
2.5.9-1
Source reference: /affected/2/versions
Fixed versions: 2.5.12-1
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "apache-opennlp",
      "purl": "pkg:deb/debian/apache-opennlp?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "2.1.0-1",
      "2.2.0-1",
      "2.2.0-1~exp",
      "2.3.0-1",
      "2.3.1-1",
      "2.3.1-2",
      "2.3.2-1",
      "2.3.3-1",
      "2.4.0-1",
      "2.5.0-1",
      "2.5.1-1",
      "2.5.12-1",
      "2.5.2-1",
      "2.5.3-1",
      "2.5.9-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-82617.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "apache-opennlp",
      "purl": "pkg:deb/debian/apache-opennlp?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "2.5.12-1",
      "2.5.3-1",
      "2.5.9-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-82617.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2.5.12-1"
          }
        ]
      }
    ],
    "package": {
      "name": "apache-opennlp",
      "purl": "pkg:deb/debian/apache-opennlp?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "2.5.3-1",
      "2.5.9-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-82617.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event: #58369 · Revision 1
Added to Heist Feed: Sun, 25 Oct 2026 17:57:22 GMT
Publisher date: Fri, 11 Sep 2026 18:16:59 GMT

Read the original announcement