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Fencer Vulns
medium 4.7

CVE-2023-33251 json

When Akka HTTP before 10.5.2 accepts file uploads via the FileUploadDirectives.fileUploadAll directive, the temporary file it creates has t…

published 2023-05-21 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-37419

cvss
4.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 4%
public exploits
0
none known

Summary

When Akka HTTP before 10.5.2 accepts file uploads via the FileUploadDirectives.fileUploadAll directive, the temporary file it creates has too weak permissions: it is readable by other users on Linux or UNIX, a similar issue to CVE-2022-41946.

Patch / fix

  • lightbend akka_http 10.5.2

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
21 mo ago

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.7 CVSS:3.1/AC:H/AV:L/A:N/C:H/I:N/PR:L/S:U/UI:N
CNA 3.1 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Classification

Weakness
  • CWE-732 Incorrect Permission Assignment for Critical Resource

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.