CVE-2023-33199

malformed proposed intoto v0.0.2 entries can cause a panic in Rekor

MEDIUM
5.3
CVSS Score
Published: May 26, 2023 at 10:52 PM UTC
Updated: June 17, 2026 at 06:01 AM UTC
2 products affected across 2 vendorsRekorRekor

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

Description

Rekor's goals are to provide an immutable tamper resistant ledger of metadata generated within a software projects supply chain. A malformed proposed entry of the `intoto/v0.0.2` type can cause a panic on a thread within the Rekor process. The thread is recovered so the client receives a 500 error message and service still continues, so the availability impact of this is minimal. This has been fixed in v1.2.0 of Rekor. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.2.0
Affected range stops below 1.2.0, so it looks safe — our inference, not a vendor statement
v < 1.2.0
Affected range stops below 1.2.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-617

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