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CVE-2023-26044

19
FAUCET Score

CVE-2023-26044 is a Denial-of-Service (DoS) vulnerability affecting the ReactPHP HTTP server component, specifically when using the RequestBodyBufferMiddleware with large settings. This flaw allows attackers to cause high CPU load by sending oversized HTTP request bodies, potentially delaying or slowing legitimate requests. Rated Medium (CVSS 5.3), the vulnerability requires no user interaction and has low attack complexity, but only impacts availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 0.8.0, < 1.9.0CPE matchmatch criteria
cpe:2.3:a:reactphp:http:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.68%
Probability of exploitation in next 30 days
EPSS Percentile
48.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0068 is in the 31st percentile among its peer group of 23,701 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: react/httpFixed in: 1.9.0
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-95x4-j7vc-h8mfmedium

ReactPHP's HTTP server continues parsing unused multipart parts after reaching input field and file upload limits

May 17, 2023

References

github.com / reactphp/http/commit/9681f764b80c45ebfb5fe2ea7da5bd3babfcdcfd
Patch
github.com / reactphp/http/security/advisories/GHSA-95x4-j7vc-h8mf
Vendor Advisory