CVE-2026-57953: Mythic before 3.4.0.60 contains an authorization bypass vulnerability that allows authenticated spectator-role

Q: How do I fix CVE-2026-57953?

mythic: upgrade to 3.4.0.60. Exact commands for each OS are on this page.

Q: Is CVE-2026-57953 being exploited?

CVE-2026-57953 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-57953 affect?

CVE-2026-57953 affects mythic. Severity is medium (CVSS 5.4). 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 spect

Q: How urgent is CVE-2026-57953?

Priority 28/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2026-57953 is a medium-severity flaw (CVSS 5.4) affecting mythic. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 config

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 62%)
CISA exploited list	No
Weakness	CWE-863
Published	2026-06-29
Last modified	2026-10-25

Publisher (CNA): VulnCheck · Vendor: its-a-feature

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-29 18:16 UTCPublished CVE record published
2026-10-25 21:10 UTCUpdated Record last modified

its-a-feature mythic UPGRADE

Affected: < 3.4.0.60

Fixed in: 3.4.0.60

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mythic || rpm -q mythic || mythic --version

2. UPGRADE to 3.4.0.60 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mythic

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mythic

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-57953?

mythic: upgrade to 3.4.0.60. Exact commands for each OS are on this page.

Is CVE-2026-57953 being exploited?

CVE-2026-57953 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-57953 affect?

CVE-2026-57953 affects mythic. Severity is medium (CVSS 5.4). 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 spect

How urgent is CVE-2026-57953?

Priority 28/100. No elevated risk signals yet.

Related CVEs

CVE-2026-57951 MEDIUM 6.5 UPGRADE Mythic before 3.4.0.60 contains a broken hasura permission filter on the payload_build_step table with an alwa
CVE-2026-57952 MEDIUM 5.3 UPGRADE Mythic before 3.4.0.60 contains an authorization bypass vulnerability in four REST endpoints (c2profile_config

References

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