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CVE-2015-8863

27
FAUCET Score

CVE-2015-8863 is a critical heap-based buffer overflow vulnerability in the 'jq' JSON processor, affecting various jq_project and openSUSE products. This flaw, an off-by-one error in the tokenadd function, allows remote attackers to cause a denial of service (crash) by submitting a specially crafted, long JSON-encoded number. With a CVSS score of 9.8, it presents a severe risk due to its network-based attack vector, low attack complexity, and potential for high impact on confidentiality, integrity, and availability. Despite its critical severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
42.1CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
13.2CPE matchmatch criteria
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
<= 1.5CPE matchmatch criteria
cpe:2.3:a:jq_project:jq:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
7.50%
Probability of exploitation in next 30 days
EPSS Percentile
93.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0750 is in the 89th percentile among its peer group of 36,833 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (12)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: cm1 jq 1.5-6 on CBL Mariner 1.0Fixed in: 1.5-6
microsoftpatch availablevia msrc
Product: cbl2 jq 1.5-6 on CBL Mariner 2.0Fixed in: 1.5-6
microsoftpatch availablevia msrc
Product: 16851-16820Fixed in: 1.5-6
microsoftpatch availablevia msrc
Product: 16852-16823Fixed in: 1.5-6
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 1.5-6
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 x64Fixed in: 1.5-6
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 ARMFixed in: 1.5-6
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 1.5-6
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7Fixed in: jq-0:1.3-3.el7ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 8.0 (Liberty)Fixed in: jq-0:1.3-3.el7ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7Fixed in: jq-0:1.3-3.el7ost
View patch

Vendor Advisories (3)

microsoft2020-Aug/CVE-2015-8863

CVE-2015-8863

Aug 11, 2020
microsoft2016-May/CVE-2015-8863Critical

Off-by-one error in the tokenadd function in jv_parse.c in jq allows remote attackers to cause a denial of service (crash) via a long JSON-encoded number which triggers a heap-based buffer overflow.

May 10, 2016
redhatCVE-2015-8863Moderate

jq: heap-buffer-overflow in tokenadd() function

Oct 18, 2015

References

lists.opensuse.org / opensuse-updates/2016-05/msg00012.html
lists.opensuse.org / opensuse-updates/2016-05/msg00014.html
rhn.redhat.com / errata/RHSA-2016-1098.html
rhn.redhat.com / errata/RHSA-2016-1099.html
rhn.redhat.com / errata/RHSA-2016-1106.html
bugs.debian.org / cgi-bin/bugreport.cgi
github.com / stedolan/jq/commit/8eb1367ca44e772963e704a700ef72ae2e12babd
Patch
github.com / stedolan/jq/issues/995
security.gentoo.org / glsa/201612-20
openwall.com / lists/oss-security/2016/04/23/1
openwall.com / lists/oss-security/2016/04/23/2