Page generated: 09 Nov 2026, 03:02 UTC
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CVE-2017-9805

The REST Plugin in Apache Struts 2.1.1 through 2.3.x before 2.3.34 and 2.5.x before 2.5.13 uses an XStreamHandler with an instance of XStream for deserialization without any type filtering, which can lead to Remote Code Execution when deserializing XML payloads.

CVSS 8.1 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.7/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 8.1: +1.21
  • Fresh EPSS: 99.40%: +0.50

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 10 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

The Hacker News
Press · 07 Nov 2025, 08:00 · From Log4j to IIS, China’s Hackers Turn Legacy Bugs into Global Espionage Tools - The Hacker News
The Hacker News
Press · 30 May 2025, 07:00 · China-Linked Hackers Exploit SAP and SQL Server Flaws in Attacks Across Asia and Brazil - The Hacker News
The Hacker News
Press · 23 Aug 2021, 07:00 · Top 15 Vulnerabilities Attackers Exploited Millions of Times to Hack Linux Systems - The Hacker News
SecurityWeek
Press · 25 Sep 2017, 07:00 · Oracle Releases Patches for Exploited Apache Struts Flaw - SecurityWeek
Southern Utah University
Press · 21 Sep 2017, 07:00 · Public Apology: Comments on the Equifax Cybersecurity Breach - Southern Utah University
See all 10 source documents
The Hacker News
Press · 14 Sep 2017, 07:00 · Equifax Suffered Data Breach After It Failed to Patch Old Apache Struts Flaw - The Hacker News
Cisco Talos Blog
Press · 07 Sep 2017, 07:00 · Another Apache Struts Vulnerability Under Active Exploitation - Cisco Talos Blog
Rapid7
Press · 06 Sep 2017, 07:00 · Apache Struts S2-052 (CVE-2017-9805): What You Need To Know - Rapid7
BleepingComputer
Press · 06 Sep 2017, 07:00 · New Apache Struts Vulnerability Puts Many Fortune Companies at Risk - BleepingComputer
The Hacker News
Press · 05 Sep 2017, 07:00 · Critical Flaw in Apache Struts2 Lets Hackers Take Over Web Servers - The Hacker News

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.7 (2026-11-02 15:12). The curve appears once the score changes.

Public exploit evidence

3

Public exploit entries / repo candidates

See 3 repos with metrics
RepositoryStarsForksLanguageUpdated
Shakun8/CVE-2017-980530Python03 Oct 2022, 00:16
7s26simon/CVE-2017-9805-S2-05200Python28 Feb 2026, 11:45
Fl5xia/CVE-2017-980500—04 Jan 2026, 19:02
Public exploit evidence
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 8.1; EPSS 99.4%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
network access, no prior privileges, no user interaction, additional attack conditions.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 13:57:54.561888+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
First press mention
05 Sep 2017, 07:00
Published
15 Sep 2017, 19:00
Added to the CISA KEV catalog
03 Nov 2021, 00:00
Latest press mention
07 Nov 2025, 08:00
Score calculated
05 Nov 2026, 13:57
PoCs on GitHub
3 repositories