CVE-2021-28100

Netflix/Priam: Temporary Directory Information Disclosure

5.5 Medium

Priam uses File.createTempFile, which gives the permissions on that file -rw-r--r--. An attacker with read access to the local filesystem can read anything written there by the Priam process.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

0.27%Down 0.1 points since Apr 14, 2021

What each source reports

NVD Score used 5.5

Priam uses File.createTempFile, which gives the permissions on that file -rw-r--r--. An attacker with read access to the local filesystem can read anything written there by the Priam process.

Record: CVE-2021-28100
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0: 2.1 LowAV:L/AC:L/Au:N/C:P/I:N/A:N
Updated: 2026-11-02

CVE List No score

Priam uses File.createTempFile, which gives the permissions on that file -rw-r--r--. An attacker with read access to the local filesystem can read anything written there by the Priam process.

Record: CVE-2021-28100
Updated: 2026-11-02

EUVDEUVD-2021-0650 No score

Priam uses File.createTempFile, which gives the permissions on that file -rw-r--r--. An attacker with read access to the local filesystem can read anything written there by the Priam process.

Record: EUVD-2021-0650
Updated: 2026-11-03

GitHub AdvisoriesGHSA-f4jh-ww96-9h9j 6.2

Netflix/Priam: Temporary Directory Information Disclosure

Impact

When File.createTempFile creates a file, the permissions on that file are -rw-r--r--. This means that other users can read the contents of these files after they are written, although they can not modify the contents. This allows for local information disclosure if these files contain sensitive information.

Vulnerable locations:

The custom CodeQL queries leveraged to find these this as well as their results can be found here:

https://lgtm.com/query/1543383251073929777/ https://lgtm.com/query/3142895023158674709/

Official Disclosure

https://github.com/Netflix/security-bulletins/blob/master/advisories/nflx-2021-002.md

Fix

There are no fixed versions.

Record: GHSA-f4jh-ww96-9h9j
CVSS 3.1: 6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-377
Updated: 2026-11-02

OSVGHSA-f4jh-ww96-9h9j 6.2

Netflix/Priam: Temporary Directory Information Disclosure

Impact

Vulnerable locations:

The custom CodeQL queries leveraged to find these this as well as their results can be found here:

https://lgtm.com/query/1543383251073929777/ https://lgtm.com/query/3142895023158674709/

Official Disclosure

https://github.com/Netflix/security-bulletins/blob/master/advisories/nflx-2021-002.md

Fix

There are no fixed versions.

Record: GHSA-f4jh-ww96-9h9j
CVSS 3.1: 6.2 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-377
Updated: 2026-11-02

Affected products

netflix priam

Affected packages

Affected packages
Package	Affected	Fixed
`com.netflix.priam:priam` Maven	through 3.1.104	None known
`com.netflix.priam:priam` Maven	through 3.1.104, plus listed versions 1.1.201.1.361.1.371.1.511.1.52 Show 45 moreShow less 1.1.531.1.541.1.562.0.162.0.52.0.62.0.72.1.02.2.02.3.02.4.02.5.02.6.02.6.12.6.22.6.32.6.42.7.02.7.12.7.22.7.32.7.42.7.52.8.02.8.12.8.22.8.33.0.03.0.23.0.33.0.43.0.53.0.63.0.73.0.83.0.93.1.03.1.13.1.103.1.1013.1.1023.1.1033.1.113.1.123.1.13	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-28100 is a medium vulnerability (CVSS 5.5) in Netflix Priam, published March 23, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 19th percentile. No source names a fixed version.

References

This page doesn't list everything

Left out here: 83 versions. The JSON record has them.