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No exploitation reportedFix available

CVE-2020-6750

No exploitation reported by the sources we read.

  • Published2020-01-09

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

GSocketClient in GNOME GLib through 2.62.4 may occasionally connect directly to a target address instead of connecting via a proxy server when configured to do so, because the proxy_addr field is mishandled. This bug is timing-dependent and may occur only sporadically depending on network delays. The greatest security relevance is in use cases where a proxy is used to help with privacy/anonymity, even though there is no technical barrier to a direct connection. NOTE: versions before 2.60 are unaffected.

Timeline

dates in UTC
  1. 2020-01-0920:15CVE publishedNVD

Versions per branch

NVD
Fedoraproject fedora
BranchAffectedFixed in
30.x= 30no fix published
31.x= 31no fix published
Gnome glib
BranchAffectedFixed in
2.x≥ 2.60.0, ≤ 2.62.4no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • glibCleanStartall versions · fixed in 2.62.5-r0
  • glibAzure Linux:2all versions · fixed in 2.71.0-1
  • glibAlpine:v3.24from 2.60.0 · fixed in 2.62.5-r0
  • glibAlpine:v3.23from 2.60.0 · fixed in 2.62.5-r0
  • glibAlpine:v3.22from 2.60.0 · fixed in 2.62.5-r0
  • glibAlpine:v3.21from 2.60.0 · fixed in 2.62.5-r0
  • glibAlpine:v3.20from 2.60.0 · fixed in 2.62.5-r0
  • glibAlpine:v3.19from 2.60.0 · fixed in 2.62.5-r0

12 more package ranges on OSV.dev

Vendor advisories

  • CVE-2020-6750 Red Hat Product Security

    glib: Mishandling of proxy_addr field in GSocketClient may lead to proxy being ignored

Full record on NVD

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2020-01-09
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-w778-hx63-vw7w

Frequently asked questions

What is CVE-2020-6750?

GSocketClient in GNOME GLib through 2.62.4 may occasionally connect directly to a target address instead of connecting via a proxy server when configured to do so, because the proxy_addr field is mishandled. This bug is timing-dependent and may occur only sporadically depending on network delays. The greatest security relevance is in use cases where a proxy is used to help with privacy/anonymity, even though there is no technical barrier to a direct connection. NOTE: versions before 2.60 are unaffected.

Is CVE-2020-6750 actively exploited?

Active exploitation of CVE-2020-6750 has not been confirmed. Its EPSS score was 2.2% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-6750?

CVE-2020-6750 has a CVSS v3 base score of 5.9 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

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