Vulnerability-Lookup

UBUNTU-CVE-2026-59696 (CVE-2026-59696)

Vulnerability from osv_ubuntu – Published: 2026-09-01 15:17 – Updated: 2026-09-28 15:01 – Source website

Details

Improper Validation of Specified Quantity in Input vulnerability in Erlang/OTP stdlib allows a remote attacker to degrade availability by supplying a URI whose port component is a very long run of digits. uri_string:get_port/1 passes the port substring to binary_to_integer/1 with no length bound, catching only error:badarg, so a syntactically valid port of up to roughly 1.26 million digits converts successfully and costs the calling process hundreds of milliseconds of arbitrary-precision arithmetic. The conversion is reached from every authority-parsing path in uri_string:parse/1, including the host, registered-name, and IPv4 and IPv6 forms. parse/1 is the documented interface for parsing URIs, so any application that parses an attacker-supplied URI is exposed without further configuration. The conversion function is documented to accept integers of any size, so bounding the input is the caller's responsibility. This issue affects OTP from OTP 21.0 before OTP 27.3.4.17, from OTP 28.0 before OTP 28.5.0.6, and from OTP 29.0 before OTP 29.0.6, corresponding to stdlib from 3.5 before 6.2.2.5, from 7.0 before 7.3.0.2, and from 8.0 before 8.0.4.

Severity

6.9 (Medium)


                    
                      CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-59696	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-59696	REPORT
	https://github.com/erlang/otp/security/advisories…	REPORT
	https://cna.erlef.org/cves/CVE-2026-59696.html	REPORT
	https://osv.dev/vulnerability/EEF-CVE-2026-59696	REPORT
	https://github.com/erlang/otp/commit/aba0fe8c2d70…	REPORT
	https://github.com/erlang/otp/commit/e3be1cfe9f6c…	REPORT
	https://www.erlang.org/doc/system/versions.html#o…	REPORT

JSON

To clipboard

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CVE-2026-59696 (GCVE-0-2026-59696)

Vulnerability from cvelistv5 – Published: 2026-09-01 14:37 – Updated: 2026-09-08 01:07

Title

uri_string does not bound the port component of a URI before integer conversion

Summary

Severity

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-01 15:54 UTC

CWE

CWE-1284 - Improper Validation of Specified Quantity in Input

Assigner

EEF mitre root Scorecard

References

6 references

URL	Tags
https://github.com/erlang/otp/security/advisories…	vendor-advisory
https://cna.erlef.org/cves/CVE-2026-59696.html	related
https://osv.dev/vulnerability/EEF-CVE-2026-59696	related
https://www.erlang.org/doc/system/versions.html#o…	x_version-scheme
https://github.com/erlang/otp/commit/aba0fe8c2d70…	patch
https://github.com/erlang/otp/commit/e3be1cfe9f6c…	patch

Impacted products

3 products

Vendor	Product	Version
Erlang	OTP	Affected: 21.0 , < 27.3.4.17 (otp) Affected: 28.0 , < 28.5.0.6 (otp) Affected: 29.0 , < 29.0.6 (otp) cpe:2.3:a:erlang:erlang\/otp::::::::
Erlang	OTP	Affected: 3.5 , < 6.2.2.5 (otp) Affected: 7.0 , < 7.3.0.2 (otp) Affected: 8.0 , < 8.0.4 (otp) cpe:2.3:a:erlang:erlang\/otp::::::::
Erlang	OTP	Affected: 29a9dd0e17a97a3e6e46f0d08c6ba8f31db33f5e , < * (git) cpe:2.3:a:erlang:erlang\/otp::::::::

Credits

Eric Meadows-Jönsson Jonatan Männchen / EEF Peter Ullrich José Valim Konrad Pietrzak / Ericsson Ingela Anderton Andin Dan Gudmundsson John Högberg Rickard Green

Show details on NVD website

JSON

To clipboard

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          "descriptions": [
            {
              "cweId": "CWE-1284",
              "description": "CWE-1284 Improper Validation of Specified Quantity in Input",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-08T01:07:47.936Z",
        "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "shortName": "EEF"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/erlang/otp/security/advisories/GHSA-8qw4-2chm-mvj2"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://cna.erlef.org/cves/CVE-2026-59696.html"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://osv.dev/vulnerability/EEF-CVE-2026-59696"
        },
        {
          "tags": [
            "x_version-scheme"
          ],
          "url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/erlang/otp/commit/aba0fe8c2d700bf4ac94607cf7f00e53bbe4042d"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/erlang/otp/commit/e3be1cfe9f6cedd0cd20d9905e05601dfb31c8aa"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "uri_string does not bound the port component of a URI before integer conversion"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
    "assignerShortName": "EEF",
    "cveId": "CVE-2026-59696",
    "datePublished": "2026-09-01T14:37:33.697Z",
    "dateReserved": "2026-07-06T14:05:47.003Z",
    "dateUpdated": "2026-09-08T01:07:47.936Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

UBUNTU-CVE-2026-59696 (CVE-2026-59696)

CVE-2026-59696 (GCVE-0-2026-59696)

Tags

Sightings

Nomenclature

Related by attack behaviour