CVE-2023-33199 | malformed proposed intoto v0.0.2 entries can cause a panic in Rekor

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.

Published: 2023-05-26 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-33199 is rated Low Risk (38.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.67%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-33199

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.17% 0.67% +0.50%
2 2026-06-13 0.11% 0.17% +0.06%
3 2025-11-21 — 0.11% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-33199

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 [email protected]
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 3.9 1.4 [email protected]

Weakness enumeration for CVE-2023-33199

GitHub Security Advisory for CVE-2023-33199

GHSA-frqx-jfcm-6jjr · Severity: medium · Ecosystem: go — malformed proposed intoto entries can cause a panic

OS Trackers for CVE-2023-33199

vendor priority summary link
alpine medium CVE-2023-33199: 1 source package rows (rekor); 2 state rows across 2 repos (3.22-community, edge-community); fixed 0, open 2. https://security.alpinelinux.org/vuln/CVE-2023-33199
debian unimportant CVE-2023-33199 unimportant priority: Debian including 1 source packages (rekor), 3 status rows across 3 suites (forky, sid, trixie): resolved 3. https://security-tracker.debian.org/tracker/CVE-2023-33199
suse medium CVE-2023-33199 severity moderate: SUSE including 3 source package names (rekor-1.2.1-1.1, rekor-1.2.1-150400.4.12.1, rekor-1.3.10-160000.2.2), 9 product×package rows across 9 product lines (SUSE Linux Enterprise Module for Basesystem 15 SP4, SUSE Linux Enterprise Module for Basesystem 15 SP5, … (9 product lines)): Fixed 9. https://www.suse.com/security/cve/CVE-2023-33199/

Affected software / configurations for CVE-2023-33199

Vendor Product Version Raw CPE
linuxfoundation rekor < 1.2.0 cpe:2.3:a:linuxfoundation:rekor:*:*:*:*:*:*:*:*

References for CVE-2023-33199

cvelogic Threat Intelligence