How severe is CVE-2023-28358?

CVE-2023-28358 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-28358 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28358?

CVE-2023-28358 affects Rocket.chat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28358?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-28358 published?

CVE-2023-28358 was published on 2023-05-11 and last updated on 2026-06-17.

CVE-2023-28358

CVE-2023-28358 is a medium-severity vulnerability in Rocket.chat with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Rocket.chat
Published: 2023-05-11
Last modified: 2026-06-17

Description

A vulnerability has been discovered in Rocket.Chat where a markdown parsing issue in the "Search Messages" feature allows the insertion of malicious tags. This can be exploited on servers with content security policy disabled possible leading to some issues attacks like account takeover.

Frequently asked questions

What is CVE-2023-28358?: A vulnerability has been discovered in Rocket.Chat where a markdown parsing issue in the "Search Messages" feature allows the insertion of malicious tags. This can be exploited on servers with content security policy disabled possible leading to some issues attacks like account takeover.
How severe is CVE-2023-28358?: CVE-2023-28358 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-28358 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28358?: CVE-2023-28358 affects Rocket.chat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28358?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-28358 published?: CVE-2023-28358 was published on 2023-05-11 and last updated on 2026-06-17.

References

https://hackerone.com/reports/1781131

Affected products (1)

cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*

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