CVE-2026-43868 | Apache Thrift: Rust implementation vulnerable to CVE-2020-13949 pattern

Memory Allocation with Excessive Size Value vulnerability in Apache Thrift. This issue affects Apache Thrift: before 0.23.0. Users are recommended to upgrade to version 0.23.0, which fixes the issue.

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

CVE-2026-43868 is rated Low Risk (31.5/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.38%). 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-2026-43868

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 0.25% 0.38% +0.12%
2 2026-05-11 0.19% 0.25% +0.06%
3 2026-05-07 — 0.19% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-43868

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 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2026-43868

GitHub Security Advisory for CVE-2026-43868

GHSA-2f9f-gq7v-9h6m · Severity: medium · Ecosystem: rust — Apache Thrift has a Memory Allocation with Excessive Size Value Vulnerability

OS Trackers for CVE-2026-43868

vendor priority summary link
debian unimportant CVE-2026-43868 unimportant priority: Debian including 1 source packages (thrift), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 3, resolved 2. https://security-tracker.debian.org/tracker/CVE-2026-43868
ubuntu medium CVE-2026-43868 medium priority: Ubuntu including 1 source packages (thrift), 6 status rows across 6 suites (focal, jammy, noble, questing, resolute, upstream): needs-triage 6. https://ubuntu.com/security/CVE-2026-43868

Affected software / configurations for CVE-2026-43868

Vendor Product Version Raw CPE
apache thrift < 0.23.0 cpe:2.3:a:apache:thrift:*:*:*:*:*:*:*:*

References for CVE-2026-43868

cvelogic Threat Intelligence