CVE-2026-42507 (GCVE-0-2026-42507)

Vulnerability from cvelistv5 – Published: 2026-06-02 22:01 – Updated: 2026-06-03 19:04
VLAI
Title
Arbitrary inputs are included in errors without any escaping in net/textproto
Summary
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.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-03 19:04 UTC
CWE
  • CWE-532 - Insertion of Sensitive Information into Log File
Assigner
Go CNA under the Google root
CNA scorecard E 42/100 over 75 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Go standard library net/textproto Affected: 0 , < 1.25.11 (semver)
Affected: 1.26.0-0 , < 1.26.4 (semver)
guessed Create a notification for this product.
Show details on NVD website
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          },
          {
            "lang": "es",
            "value": "Al devolver errores, las funciones en el paquete net/textproto incluir\u00edan su entrada como parte del error. Esto podr\u00eda permitir a un atacante inyectar contenido enga\u00f1oso en errores que son impresos o registrados."
          }
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        "lastModified": "2026-07-22T19:10:00.120",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
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