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Vulnerability record · CVE-2018-6196 · published 25 January 2018

CVE-2018-6196: Tats w3m vulnerability

TTats · W3m

w3m through 0.5.3 is prone to an infinite recursion flaw in HTMLlineproc0 because the feed_table_block_tag function in table.c does not prevent a negative indent value.

7.5 CVSS 3.0 High EPSS 2.9% · top 13.3% CWE-835 · CWE-835
7.5CVSS 3.0 base score, v2 5.0
2.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
12References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

w3m through 0.5.3 is prone to an infinite recursion flaw in HTMLlineproc0 because the feed_table_block_tag function in table.c does not prevent a negative indent value.

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

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
https://github.com/tats/w3m/commit/8354763b90490d4105695df52674d0fcef823e92 PatchThird Party Advisory
https://github.com/tats/w3m/issues/88 ExploitPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/04/msg00025.html
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
https://github.com/tats/w3m/commit/8354763b90490d4105695df52674d0fcef823e92 PatchThird Party Advisory
https://github.com/tats/w3m/issues/88 ExploitPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/04/msg00025.html
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-2018-6196), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.