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Vulnerability record · CVE-2018-6198 · published 25 January 2018

CVE-2018-6198: Tats w3m link following vulnerability

TTats · W3m

w3m through 0.5.3 does not properly handle temporary files when the ~/.w3m directory is unwritable, which allows a local attacker to craft a symlink attack to overwrite arbitrary files.

4.7 CVSS 3.0 Medium EPSS 0.40% · top 68.3% CWE-59 · Link following
4.7CVSS 3.0 base score, v2 3.3
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

Description

w3m through 0.5.3 does not properly handle temporary files when the ~/.w3m directory is unwritable, which allows a local attacker to craft a symlink attack to overwrite arbitrary files.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00028.html
http://www.securityfocus.com/bid/102855 Third Party AdvisoryVDB Entry
https://bugs.debian.org/888097 Issue TrackingPatchThird Party Advisory
https://github.com/tats/w3m/commit/18dcbadf2771cdb0c18509b14e4e73505b242753 PatchThird Party Advisory
https://salsa.debian.org/debian/w3m/commit/18dcbadf2771cdb0c18509b14e4e73505b242753 PatchThird Party Advisory
https://usn.ubuntu.com/3555-1/ Third Party Advisory
https://usn.ubuntu.com/3555-2/ Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00028.html
http://www.securityfocus.com/bid/102855 Third Party AdvisoryVDB Entry
https://bugs.debian.org/888097 Issue TrackingPatchThird Party Advisory
https://github.com/tats/w3m/commit/18dcbadf2771cdb0c18509b14e4e73505b242753 PatchThird Party Advisory
https://salsa.debian.org/debian/w3m/commit/18dcbadf2771cdb0c18509b14e4e73505b242753 PatchThird Party Advisory
https://usn.ubuntu.com/3555-1/ Third Party Advisory
https://usn.ubuntu.com/3555-2/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2018-6198), CISA KEV, FIRST EPSS (scores of 2026-10-11). This page is refreshed as NVD updates the record.