CVE-2026-77831

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Source

https://cve.org/CVERecord?id=CVE-2026-77831

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77831.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-77831

Aliases

EEF-CVE-2026-77831
GHSA-7c66-59m8-723c

Published

2026-08-30T00:18:38Z

Modified

2026-09-03T03:30:32Z

Severity

2.1 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator

Summary

Algorithmic-complexity denial of service in AshPaperTrail full-diff list tracking

Details

Inefficient Algorithmic Complexity vulnerability in ash-project ash_paper_trail allows a user who can submit a large array attribute to a paper-trailed create or update action to cause a denial of service through excessive CPU and memory use.

With full-diff change tracking, AshPaperTrail.ChangeBuilders.FullDiff.ListChange pairs each prior array element against the new list by rebuilding the remaining-elements accumulator with acc ++ [tuple] on every step, copying the growing list each time, so the pairing scales cubically in the array length. Nothing bounds the length and the value comes straight from action input, so one request carrying a large accepted {:array, _} attribute forces tens of seconds of CPU and multi-gigabyte allocations.

This issue affects ash_paper_trail: from 0.1.1 before 0.7.0.

Database specific

{
    "cna_assigner": "EEF",
    "cwe_ids": [
        "CWE-407"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77831.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "449cd2a93416853066378fa61c715e89f80dc854"
                },
                {
                    "fixed": "e781f5d8840b07d57db99f9a4728298837d7b3a8"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}

References

Affected packages

Git / github.com/ash-project/ash_paper_trail

Affected ranges

Type

GIT

Repo

https://github.com/ash-project/ash_paper_trail

Events

Introduced

e4f1a1527c84a1ba0ceffb271abcb72cb78fc92c

Fixed

e03925c19365697ceb099d2ceca9ee1f5ce8c8b8

Fixed

e781f5d8840b07d57db99f9a4728298837d7b3a8

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0.1.1"
        },
        {
            "fixed": "0.7.0"
        }
    ],
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ]
}

Affected versions

v0.*

v0.1.1

v0.1.2

v0.1.2-rc.0

v0.1.3

v0.1.4

v0.2.0

v0.2.1

v0.3.0

v0.5.0

v0.5.1

v0.5.2

v0.5.3

v0.5.4

v0.5.5

v0.5.6

v0.5.7

v0.6.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77831.json"