CVE-2016-10027 json
Smack allows the bypass of TLS protections
published 2017-01-12 9 y ago modified 2026-06-17 4 mo ago also GHSA-66pq-hqv5-228g , EUVD-2016-1224
- cvss
- 5.9
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 74%
- public exploits
- 0
- none known
Summary
Race condition in the XMPP library in Smack before 4.1.9, when the SecurityMode.required TLS setting has been set, allows man-in-the-middle attackers to bypass TLS protections and trigger use of cleartext for client authentication by stripping the "starttls" feature from a server response.
Patch / fix
- maven org.igniterealtime.smack:smack-core 4.1.9
- igniterealtime smack 4.1.9
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2016-10027 updated cvss 7.5
smack: TLS SecurityMode.required bypass via StripTLS attack
-
Red Hat JBoss BRMS 5 smack smack Red Hat JBoss Fuse 6 camelaffected: no fix planned “Will not fix”
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
1.51% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
| GitHub | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.igniterealtime.smack:smack-core | <4.1.9 |
4.1.9 |
Classification
- Weakness
-
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization
References
-
github.com
/igniterealtime/Smack/commit/059ee99ba0d5ff7758829acf5a9aeede09ec820b
web, patch, third-party-advisory
-
github.com
/igniterealtime/Smack/commit/a9d5cd4a611f47123f9561bc5a81a4555fe7cb04
web, patch, third-party-advisory
-
openwall.com
/lists/oss-security/2016/12/22/12
mailing-list, web, patch, third-party-advisory
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/J4WXAZ4JVJXHMEDDXJVWJHPVBF5QCTZF/
vendor-advisory
-
issues.igniterealtime.org
/projects/SMACK/issues/SMACK-739
web, issue-tracking, vendor-advisory
-
community.igniterealtime.org
/blogs/ignite/2016/11/22/smack-security-advisory-2016-11-22
web, vendor-advisory
-
securityfocus.com
/bid/95129
vdb-entry, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2016-10027
advisory
-
github.com
/igniterealtime/Smack
package
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/J4WXAZ4JVJXHMEDDXJVWJHPVBF5QCTZF
web
-
lists.fedoraproject.org
/archives/list/package-announce@lists.fedoraproject.org/message/J4WXAZ4JVJXHMEDDXJVWJHPVBF5QCTZF
web
Sources
- CVE List CVE-2016-10027
- GitHub Advisory GHSA-66pq-hqv5-228g
- NVD CVE-2016-10027
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.