Threats / Apache / CVE-2006-1547
CVE-2006-1547
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Apache Struts 1 vulnerability
Apache Struts 1 before 1.2.9 with BeanUtils 1.7 contains a denial-of-service vulnerability in ActionForm that allows attackers to disrupt service availability.
Verdict
Today item — known-exploited.
A denial-of-service condition in Apache Struts ActionForm enables attackers to exhaust resources and interrupt application availability. The vulnerability has been observed in active exploitation.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
1 independent public report of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-01-21).
Probability (EPSS)
EPSS 0.54635 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Apache, Struts 1. Confirm exact fixed builds in the vendor advisory.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft malicious input targeting the ActionForm component to trigger resource exhaustion.
Business
Service becomes unavailable to legitimate users, disrupting business operations and customer access.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05