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CVE-2023-34396

26
FAUCET Score

CVE-2023-34396 is a high-severity "Allocation of Resources Without Limits or Throttling" vulnerability affecting Apache Struts versions through 2.5.30 and through 6.1.2. This flaw allows an unauthenticated attacker to remotely cause a denial of service by exhausting system resources, as indicated by its CVSS score of 7.5 (AV:N/AC:L/A:H). While no public exploit code or active exploitation has been observed, and community discussion is minimal, organizations should upgrade to Struts 2.5.31 or 6.1.2.1 or greater to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.5.31CPE matchmatch criteria
cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
>= 6.0.0, < 6.1.2.1CPE matchmatch criteria
cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
>= 0, <= 2.5.30CPE match
cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*
>= 0, <= 6.1.2CPE match
cpe:2.3:a:apache:struts:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.47%
Probability of exploitation in next 30 days
EPSS Percentile
91.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0547 is in the 86th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: org.apache.struts:struts2-coreFixed in: 2.5.31
mavenpatch availablevia ghsa
Product: org.apache.struts:struts2-coreFixed in: 6.1.2.1

Vendor Advisories (1)

mavenGHSA-4g42-gqrg-4633high

Apache Struts vulnerable to memory exhaustion

Jun 14, 2023

References

cwiki.apache.org / confluence/display/WW/S2-064
Vendor Advisory
security.netapp.com / advisory/ntap-20230706-0005
openwall.com / lists/oss-security/2023/06/14/3
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