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CVE-2023-33251

20
FAUCET Score

CVE-2023-33251 is a vulnerability affecting Akka HTTP versions prior to 10.5.2, specifically when handling file uploads via the FileUploadDirectives.fileUploadAll directive. The issue stems from insufficient permissions on temporary files created during uploads, making them readable by other users on Linux/UNIX systems. This vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring low privileges, and potentially leading to high confidentiality impact by allowing unauthorized access to uploaded file content. There is no impact on integrity or availability. Currently, there is no evidence of active exploitation, and no public exploit code is available on platforms like Metasploit or ExploitDB. The vulnerability has also received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 10.5.2CPE matchmatch criteria
cpe:2.3:a:lightbend:akka_http:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.7MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.0
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.15%
Probability of exploitation in next 30 days
EPSS Percentile
4.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0015 is in the 30th percentile among its peer group of 15,938 CVEs.

Social Chatter

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

Remediation records are not available for this CVE.

References

doc.akka.io / reference/security-announcements/akka-http-cve-2023-05-15.html
akka.io / security/akka-http-cve-2023-05-15.html
MitigationVendor Advisory