Detections
Analytics

SCA: security update for github.com/iskorotkov/avro/v2 (GHSA-w8j3-pq8g-8m7w)

high Tenable Cloud Security Plugin ID 442072

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - iskorotkov/avro is a fast Go Avro codec. Prior to 2.33.0, the Avro array and map decoders looped over an
 attacker-controlled block-count value without checking the underlying reader's error state inside the loop
 body. Reader.ReadBlockHeader returns the count as a Go int, which is 64-bit on amd64 / arm64 targets — so
 a producer can declare a block of up to math.MaxInt64 (~9.2 × 10¹⁸) elements followed by EOF (or any
 truncated payload), and the decoder will attempt that many no-op iterations before propagating the error.
 The realistic ceiling is "indefinite until the worker is killed externally" — a single hostile payload
 pins a CPU core until the process is OOM-killed, deadline-cancelled, or terminated. Remote,
 unauthenticated denial-of-service. This vulnerability is fixed in 2.33.0. (CVE-2026-46385)

Solution

Update the github.com/iskorotkov/avro/v2 library and its related packages to version 2.33.0 or later.

See Also

https://github.com/advisories/GHSA-w8j3-pq8g-8m7w

Plugin Details

Severity: High

ID: 442072

Version: Revision 1.7

Type: Local

Family: SCA Checks

Published: 5/18/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.16

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-46385

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/18/2026

Vulnerability Publication Date: 5/18/2026

Reference Information

CVE: CVE-2026-46385