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CVE-2015-2156

23
FAUCET Score

CVE-2015-2156 describes a vulnerability in Netty (versions before 3.9.8.Final, 3.10.3.Final, 4.0.28.Final, and 4.1.0.Beta5) and Play Framework 2.x (before 2.3.9). This flaw, rated with a CVSS score of 7.5 (High), allows remote attackers to bypass the httpOnly flag on cookies due to improper validation of cookie name and value characters. Successful exploitation could lead to the disclosure of sensitive information. While the vulnerability has a high severity, there is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.9.7CPE matchmatch criteria
cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*
3.10.0CPE matchmatch criteria
cpe:2.3:a:netty:netty:3.10.0:*:*:*:*:*:*:*
3.10.1CPE matchmatch criteria
cpe:2.3:a:netty:netty:3.10.1:*:*:*:*:*:*:*
3.10.2CPE matchmatch criteria
cpe:2.3:a:netty:netty:3.10.2:*:*:*:*:*:*:*
4.0.0CPE matchmatch criteria
cpe:2.3:a:netty:netty:4.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.43%
Probability of exploitation in next 30 days
EPSS Percentile
91.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0543 is in the 86th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (17)

mavenpatch availablevia ghsa
Product: io.netty:nettyFixed in: 3.9.8.Final
mavenpatch availablevia ghsa
Product: org.jboss.netty:nettyFixed in: 3.9.8.Final
mavenpatch availablevia ghsa
Product: io.netty:netty-parentFixed in: 4.0.28.Final
mavenpatch availablevia ghsa
Product: org.jboss.netty:nettyFixed in: 3.10.3.Final
mavenpatch availablevia ghsa
Product: io.netty:nettyFixed in: 3.10.3.Final
redhatno patchvia redhat_api
Product: Red Hat JBoss Portal 6Fixed in: netty
redhatno patchvia redhat_api
Product: Red Hat Satellite 6Fixed in: netty
redhatno patchvia redhat_api
Product: Red Hat Subscription Asset ManagerFixed in: netty
redhatno patchvia redhat_api
Product: Red Hat JBoss Data Virtualization 6Fixed in: netty
redhatno patchvia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 5Fixed in: netty
redhatno patchvia redhat_api
Product: Red Hat JBoss Enterprise Application Platform 6Fixed in: netty
redhatno patchvia redhat_api
Product: Red Hat JBoss Fuse Service Works 6Fixed in: netty
redhatno patchvia redhat_api
Product: Red Hat JBoss Portal 5Fixed in: netty
redhatno patchvia redhat_api
Product: Red Hat JBoss BRMS 6Fixed in: netty
redhatno patchvia redhat_api
Product: Red Hat JBoss Data Grid 6Fixed in: netty
redhatend of lifevia redhat_api
Product: Red Hat JBoss BRMS 5Fixed in: netty
redhatend of lifevia redhat_api
Product: Red Hat JBoss SOA Platform 5Fixed in: netty

Vendor Advisories (2)

mavenGHSA-xfv3-rrfm-f2rvhigh

Information Exposure in Netty

Jun 30, 2020
redhatCVE-2015-2156Low

netty: HttpOnly cookie bypass

May 9, 2015

References

lists.fedoraproject.org / pipermail/package-announce/2015-June/159379.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2015-May/159166.html
Third Party Advisory
netty.io / news/2015/05/08/3-9-8-Final-and-3.html
Vendor Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
github.com / netty/netty/pull/3754
Third Party Advisory
lists.apache.org / thread.html/9317fd092b257a0815434b116a8af8daea6e920b6673f4fd5583d5fe%40%3Ccommits.druid.apache.org%3E
lists.apache.org / thread.html/a19bb1003b0d6cd22475ba83c019b4fc7facfef2a9e13f71132529d3%40%3Ccommits.cassandra.apache.org%3E
lists.apache.org / thread.html/dc1275aef115bda172851a231c76c0932d973f9ffd8bc375c4aba769%40%3Ccommits.cassandra.apache.org%3E
lists.apache.org / thread.html/ff8dcfe29377088ab655fda9d585dccd5b1f07fabd94ae84fd60a7f8%40%3Ccommits.pulsar.apache.org%3E
playframework.com / security/vulnerability/CVE-2015-2156-HttpOnlyBypass
Third Party Advisory
openwall.com / lists/oss-security/2015/05/17/1
Mailing ListThird Party Advisory
securityfocus.com / bid/74704
Third Party AdvisoryVDB Entry