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Vulnerability record · CVE-2018-1337 · published 10 July 2018

CVE-2018-1337: Apache directory ldap api information exposure vulnerability

Apache · Directory Ldap Api

In Apache Directory LDAP API before 1.0.2, a bug in the way the SSL Filter was setup made it possible for another thread to use the connection before the TLS layer has been established, if the connection has already been used and put back in a pool of connections, leading to leaking any information contained in this request (including the credentials when sending a BIND request).

9.8 CVSS 3.0 Critical EPSS 5.2% · top 7.9% CWE-200 · Information exposure
9.8CVSS 3.0 base score, v2 5.0
5.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

Description

In Apache Directory LDAP API before 1.0.2, a bug in the way the SSL Filter was setup made it possible for another thread to use the connection before the TLS layer has been established, if the connection has already been used and put back in a pool of connections, leading to leaking any information contained in this request (including the credentials when sending a BIND request).

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

Affected products

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

References

LinkTags
http://www.securityfocus.com/bid/104744 Third Party AdvisoryVDB Entry
https://lists.apache.org/thread.html/d66081195e9a02ee7cc20fb243b60467d1419586eed28297d820768f%40%3Cdev.directory.apache.
https://lists.apache.org/thread.html/r0e645b3f6ca977dc60b7cec231215c59a9471736c2402c1fef5a0616%40%3Cjira.kafka.apache.or
https://lists.apache.org/thread.html/r1815fb5b0c345f571c740e7a1b48d7477647edd4ffcf9d5321e69446%40%3Cdev.kafka.apache.org
https://lists.apache.org/thread.html/r1a258430d820a90ff9d4558319296cc517ff2252327d7b3546d16749%40%3Cjira.kafka.apache.or
https://lists.apache.org/thread.html/r4da40aa50cfdb2158898f2bc6df81feec1d42c6a06db6537d5cc0496%40%3Cjira.kafka.apache.or
https://lists.apache.org/thread.html/r55e74532e7f9e84ecfa56b4e0a50a5fe0ba6f7a76880520e4400b0d7%40%3Cjira.kafka.apache.or
https://lists.apache.org/thread.html/r56b304fb9960c869995efbb31da3b9b7c6d53ee31f7f7048eb80434b%40%3Cdev.kafka.apache.org
http://www.securityfocus.com/bid/104744 Third Party AdvisoryVDB Entry
https://lists.apache.org/thread.html/d66081195e9a02ee7cc20fb243b60467d1419586eed28297d820768f%40%3Cdev.directory.apache.
https://lists.apache.org/thread.html/r0e645b3f6ca977dc60b7cec231215c59a9471736c2402c1fef5a0616%40%3Cjira.kafka.apache.or
https://lists.apache.org/thread.html/r1815fb5b0c345f571c740e7a1b48d7477647edd4ffcf9d5321e69446%40%3Cdev.kafka.apache.org
https://lists.apache.org/thread.html/r1a258430d820a90ff9d4558319296cc517ff2252327d7b3546d16749%40%3Cjira.kafka.apache.or
https://lists.apache.org/thread.html/r4da40aa50cfdb2158898f2bc6df81feec1d42c6a06db6537d5cc0496%40%3Cjira.kafka.apache.or
https://lists.apache.org/thread.html/r55e74532e7f9e84ecfa56b4e0a50a5fe0ba6f7a76880520e4400b0d7%40%3Cjira.kafka.apache.or
https://lists.apache.org/thread.html/r56b304fb9960c869995efbb31da3b9b7c6d53ee31f7f7048eb80434b%40%3Cdev.kafka.apache.org

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-1337), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.