CVE-2026-58174

Description

Hermes WebUI before 0.51.521 validates the workspace of an imported session under the active named profile but constructs the Session object without setting its profile in the /api/session/import handler, so the imported session is persisted with a null profile. Because a null profile is treated as the default profile by the profile authorization check, a user on the default profile can export the imported session transcript and use its session identifier to read files from the named profile's workspace, defeating the application's profile isolation.

CVSS v3.1 Score

6.5

MEDIUM

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

EPSS — Exploit Prediction

0.0027

Probability of exploitation

0.18%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-732 CWE-732

References

Other References

https://github.com/nesquena/hermes-webui/commit/3d5ef4758e920ba6888d49aaa4341de214693496 https://github.com/nesquena/hermes-webui/pull/4489 https://github.com/nesquena/hermes-webui/pull/4506 https://github.com/nesquena/hermes-webui/releases/tag/v0.51.521 https://www.vulncheck.com/advisories/hermes-webui-cross-profile-authorization-bypass-via-unset-session-profile-on-import https://github.com/nesquena/hermes-webui/pull/4489

Frequently Asked Questions

What is CVE-2026-58174? +

Hermes WebUI before 0.51.521 validates the workspace of an imported session under the active named profile but constructs the Session object without setting its profile in the /api/session/import handler, so the imported session is persisted with a null profile. Because a null profile is treated as the default profile by the profile authorization check, a user on the default profile can export the imported session transcript and use its session identifier to read files from the named profile's workspace, defeating the application's profile isolation. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-58174? +

CVE-2026-58174 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0027, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-58174? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-6369

An improper access control vulnerability in the canonical-livepatch snap client prior to version 10.15.0 allows a local unprivileged user to …

CVE-2026-9489

NitroSense 3.x before 3.01.3052 contains Local Privilege Escalation (LPE) vulnerability.The program exposes a Windows Named Pipe that uses a custom …

CVE-2026-6499

Incorrect Permission Assignment for Critical Resource vulnerability in ILM Informatique OpenConcerto allows Replace Binaries. This issue affects OpenConcerto: 1.7.5.

CVE-2026-8069

PredatorSense version 3.00.3136 to 3.00.3196 contain Local Privilege Escalation (LPE) vulnerability.The program exposes a Windows Named Pipe that uses a …

CVE-2025-24481

An Incorrect Permission Assignment Vulnerability exists in the product and version listed above. The vulnerability is due to incorrect permissions …

CVE-2025-1413

DaVinci Resolve on MacOS was found to be installed with incorrect file permissions (rwxrwxrwx). This is inconsistent with standard macOS …