How severe is CVE-2026-57953?

CVE-2026-57953 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.

Is CVE-2026-57953 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-57953?

CVE-2026-57953 affects Its-a-feature Mythic. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-57953?

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

When was CVE-2026-57953 published?

CVE-2026-57953 was published on 2026-06-29 and last updated on 2026-06-30.

CVE-2026-57953

CVE-2026-57953 is a medium-severity vulnerability in Its-a-feature Mythic with a CVSS 3.x base score of 5.4. 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-863.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 5.3
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Its-a-feature Mythic
Published: 2026-06-29
Last modified: 2026-06-30

Description

Mythic before 3.4.0.60 contains an authorization bypass vulnerability that allows authenticated spectator-role users to perform unauthorized write operations by accessing the eventing_import_automatic_webhook endpoint registered under spectator-permitted middleware. Attackers with spectator role can exploit this misconfigured access control to create and delete automation workflows, making unauthorized modifications to operation automation configuration and EventGroups.

Frequently asked questions

What is CVE-2026-57953?: Mythic before 3.4.0.60 contains an authorization bypass vulnerability that allows authenticated spectator-role users to perform unauthorized write operations by accessing the eventing_import_automatic_webhook endpoint registered under spectator-permitted middleware. Attackers with spectator role can exploit this misconfigured access control to create and delete automation workflows, making unauthorized modifications to operation automation configuration and EventGroups.
How severe is CVE-2026-57953?: CVE-2026-57953 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability low.
Is CVE-2026-57953 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-57953?: CVE-2026-57953 affects Its-a-feature Mythic. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-57953?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-57953 published?: CVE-2026-57953 was published on 2026-06-29 and last updated on 2026-06-30.

References

Affected products (1)

cpe:2.3:a:its-a-feature:mythic:*:*:*:*:*:*:*:*

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CVE-2026-57951 — Medium (CVSS 6.5): Mythic before 3.4.0.60 contains a broken hasura permission filter on the payload_build_step table with an…
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CVE-2026-46595 — Critical (CVSS 10.0): Previously, CVE-2024-45337 fixed an authorization bypass for misused ssh server configurations; if any other type of…
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