CVE-2026-54715Public exploitNetwork attack vector

Log-analysis crash via misplaced Opera version substring

Published Jul 30, 2026 · Updated Jul 30, 2026

Heap-based buffer overflow in GoAccess 1.10.2 allows remote attackers to crash log analysis via a crafted User-Agent. In parse_browser, the Opera branch moves a trailing version substring to match plus five without ensuring the matched browser token begins with the five-byte Opera literal, writing one to four attacker-influenced bytes past the heap allocation. Exploitation requires a web request to enter an access log later processed with a User-Agent-bearing format; default COMBINED formats expose the path, and heap corruption can abort the GoAccess process.

CVSS severity7.1
High
EPSS probability0.33%
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

Heap-based buffer overflow in GoAccess 1.10.2 allows remote attackers to crash log analysis via a crafted User-Agent. In parse_browser, the Opera branch moves a trailing version substring to match plus five without ensuring the matched browser token begins with the five-byte Opera literal, writing one to four attacker-influenced bytes past the heap allocation. Exploitation requires a web request to enter an access log later processed with a User-Agent-bearing format; default COMBINED formats expose the path, and heap corruption can abort the GoAccess process.

The record

CVE
CVE-2026-54715
Published
Jul 30, 2026
Updated
Jul 30, 2026
Vendor
allinurl
Product
GoAccess
Classifications
CWE-787, CWE-122, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 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=>= 1.10.2, < 1.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

allinurl · GoAccessversion=>= 1.10.2, < 1.11

Published CVSS scores

7.1GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-122Heap-based Buffer Overflow
T1499.004Endpoint Denial of Service: Application or System Exploitation

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