net-textproto up to 1.25.10/1.26.3 on Go net/textproto log file

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.4$0-$5k1.55

Summaryinfo

A vulnerability marked as problematic has been reported in net-textproto up to 1.25.10/1.26.3 on Go. Impacted is an unknown function of the file net/textproto. Performing a manipulation results in log file. This vulnerability was named CVE-2026-42507. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in net-textproto up to 1.25.10/1.26.3 on Go. It has been classified as problematic. This affects an unknown code of the file net/textproto. The manipulation with an unknown input leads to a log file vulnerability. CWE is classifying the issue as CWE-532. Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information. This is going to have an impact on confidentiality. The summary by CVE is:

When returning errors, functions in the net/textproto package would include its input as part of the error. This might allow an attacker to inject misleading content to errors that are printed or logged.

It is possible to read the advisory at go.dev. This vulnerability is uniquely identified as CVE-2026-42507 since 04/28/2026. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 1.25.11 or 1.26.4 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-34040). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Log file
CWE: CWE-532 / CWE-200 / CWE-284
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: net-textproto 1.25.11/1.26.4

Timelineinfo

04/28/2026 CVE reserved
06/02/2026 +35 days VulDB entry created
06/03/2026 +0 days Advisory disclosed
06/03/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: go.dev
Status: Confirmed

CVE: CVE-2026-42507 (🔒)
GCVE (CVE): GCVE-0-2026-42507
GCVE (VulDB): GCVE-100-368043
EUVD: 🔒

Entryinfo

Created: 06/03/2026 01:37
Updated: 06/03/2026 05:52
Changes: 06/03/2026 01:37 (54), 06/03/2026 05:52 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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