CVE-2026-123096

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Source
https://cve.org/CVERecord?id=CVE-2026-123096
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-123096.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-123096
Published
2026-11-05T15:11:50Z
Modified
2026-11-05T21:32:28Z
Severity
  • 7.1 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
anacrolix/torrent through 1.61.0 Memory Exhaustion via Unbounded HTTP Tracker Response
Details

anacrolix/torrent through 1.61.0 contains a memory exhaustion vulnerability in the tracker/http package that allows malicious trackers to crash clients by returning unbounded responses. Attackers controlling an HTTP tracker in a torrent file or magnet link can return huge or gzip-compressed announce or scrape responses that Client.Announce and Client.Scrape buffer without limits, exhausting process memory.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123096.json"
}
References

Affected packages

Git / github.com/anacrolix/torrent

Affected ranges

Type
GIT
Repo
https://github.com/anacrolix/torrent
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last Affected
486bcbe758e0cff0f750fcee9c26268a11250d77
Fixed
92ad51490479bb8b94720f964b1c67e5a1d68faa
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "last_affected": "1.61.0"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
        },
        {
            "range": [
                {
                    "fixed": "92ad51490479bb8b94720f964b1c67e5a1d68faa"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

downstreams/erigon/branch/release/3.*
downstreams/erigon/branch/release/3.1
downstreams/erigon/branch/release/3.2
downstreams/erigon/branch/release/3.3
downstreams/erigon/v2.*
downstreams/erigon/v2.27.0
downstreams/erigon/v2.33.0
downstreams/erigon/v2.40.0
downstreams/erigon/v2.44.0
downstreams/erigon/v2.45.0
downstreams/erigon/v2.49.0
downstreams/erigon/v2.49.1
downstreams/erigon/v2.49.2
downstreams/erigon/v2.51.0
downstreams/erigon/v2022.*
downstreams/erigon/v2022.04.03
downstreams/erigon/v2022.04.04
downstreams/erigon/v2022.05.01
downstreams/erigon/v2022.05.03
downstreams/erigon/v2022.05.08
downstreams/erigon/v2022.06.03
downstreams/erigon/v2022.07.03
downstreams/erigon/v2022.08.02
downstreams/erigon/v2022.10.01
downstreams/erigon/v3.*
downstreams/erigon/v3.1.0
downstreams/erigon/v3.1.0-rc1
downstreams/erigon/v3.3.0-rc.1
downstreams/erigon/v3.3.2
v1.*
v1.0.0
v1.1.0
v1.1.1
v1.1.2
v1.1.3
v1.1.4
v1.10.0
v1.11.0
v1.12.0
v1.13.0
v1.14.0
v1.15.0
v1.16.0
v1.17.0
v1.17.1
v1.18.0
v1.19.0
v1.2.0
v1.20.0
v1.21.0
v1.22.0
v1.23.0
v1.24.0
v1.25.0
v1.26.0
v1.26.0-alpha
v1.26.0-alpha.1
v1.26.1
v1.27.0
v1.28.0
v1.29.0
v1.29.1
v1.29.2
v1.3.0
v1.3.1
v1.30.0
v1.30.1
v1.30.2
v1.30.3
v1.30.4
v1.32.0
v1.33.0
v1.34.0
v1.35.0
v1.36.0
v1.37.0
v1.38.0
v1.39.0
v1.39.1
v1.39.2
v1.4.0
v1.40.0
v1.40.1
v1.41.0
v1.42.0
v1.43.0
v1.43.1
v1.44.0
v1.45.0
v1.46.0
v1.47.0
v1.48.0
v1.49.0
v1.49.1
v1.5.0
v1.5.1
v1.5.2
v1.50.0
v1.51.0
v1.51.1
v1.51.2
v1.51.3
v1.52.0
v1.52.1
v1.52.2
v1.52.3
v1.52.4
v1.52.5
v1.53.0
v1.53.1
v1.53.3
v1.54.0
v1.55.0
v1.56.0
v1.56.1
v1.57.0
v1.57.1
v1.58.0
v1.58.1
v1.59.0
v1.59.1
v1.6.0
v1.60.0
v1.61.0
v1.7.0
v1.7.1
v1.8.0
v1.8.1
v1.8.2
v1.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-123096.json"