CVE-2026-77831Public exploit

Denial of service via cubic list pairing

Published Aug 30, 2026 · Updated Aug 30, 2026

Inefficient algorithmic complexity in AshPaperTrail before 0.7.0 allows attackers to interrupt service via a large array attribute. AshPaperTrail.ChangeBuilders.FullDiff.ListChange rebuilds the remaining-element accumulator with acc ++ [tuple] for every prior element, repeatedly copying a growing list and producing cubic work. The resource must use full-diff tracking and expose an unbounded array attribute to create or update input; one request then consumes tens of seconds of CPU and multiple gigabytes of memory.

CVSS severity2.1
Low
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Inefficient algorithmic complexity in AshPaperTrail before 0.7.0 allows attackers to interrupt service via a large array attribute. AshPaperTrail.ChangeBuilders.FullDiff.ListChange rebuilds the remaining-element accumulator with acc ++ [tuple] for every prior element, repeatedly copying a growing list and producing cubic work. The resource must use full-diff tracking and expose an unbounded array attribute to create or update input; one request then consumes tens of seconds of CPU and multiple gigabytes of memory.

The record

CVE
CVE-2026-77831
Published
Aug 30, 2026
Updated
Aug 30, 2026
Vendor
Ash Framework
Product
AshPaperTrail
Classifications
CWE-407, CAPEC-130, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.1.1 <0.7.0
  2. Affected versionversion=449cd2a93416853066378fa61c715e89f80dc854 <e781f5d8840b07d57db99f9a4728298837d7b3a8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Ash Framework · AshPaperTrailversion=0.1.1 <0.7.0; version=449cd2a93416853066378fa61c715e89f80dc854 <e781f5d8840b07d57db99f9a4728298837d7b3a8

Published CVSS scores

2.1Ash ProjectCVSS: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 describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-407Inefficient Algorithmic Complexity
CAPEC-130Excessive Allocation
T1499.004Application or System Exploitation Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo