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CVE-2019-14993

26
FAUCET Score

CVE-2019-14993 is a denial-of-service vulnerability affecting Istio versions prior to 1.1.13 and 1.2.4. The flaw stems from mishandling regular expressions for long URIs when using specific APIs like JWT or VirtualService. With a CVSS score of 7.5 (High), this vulnerability can be exploited remotely with low complexity, leading to a complete denial of service. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.1.13CPE matchmatch criteria
cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*
>= 1.2.0, < 1.2.4CPE matchmatch criteria
cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*

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:N/I:N/A:H

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

Exploit Intelligence

EPSS Score
2.27%
Probability of exploitation in next 30 days
EPSS Percentile
81.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0227 is in the 67th 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 (10)

gopatch availablevia ghsa
Product: istio.io/istioFixed in: 1.1.13
gopatch availablevia ghsa
Product: istio.io/istioFixed in: 1.2.4
redhatpatch availablevia redhat_api
Product: Openshift Service Mesh 1.1Fixed in: kiali-0:v1.12.7.redhat1-1.el7
View patch
redhatpatch availablevia redhat_api
Product: OpenShift Service Mesh 1.1Fixed in: ior-0:1.1.0-3.el8
View patch
redhatpatch availablevia redhat_api
Product: OpenShift Service Mesh 1.1Fixed in: servicemesh-0:1.1.0-5.el8
View patch
redhatpatch availablevia redhat_api
Product: OpenShift Service Mesh 1.1Fixed in: servicemesh-cni-0:1.1.0-3.el8
View patch
redhatpatch availablevia redhat_api
Product: OpenShift Service Mesh 1.1Fixed in: servicemesh-grafana-0:6.4.3-2.el8
View patch
redhatpatch availablevia redhat_api
Product: OpenShift Service Mesh 1.1Fixed in: servicemesh-operator-0:1.1.0-9.el8
View patch
redhatpatch availablevia redhat_api
Product: OpenShift Service Mesh 1.1Fixed in: servicemesh-prometheus-0:2.14.0-3.el8
View patch
redhatpatch availablevia redhat_api
Product: OpenShift Service Mesh 1.1Fixed in: servicemesh-proxy-0:1.1.0-4.el8
View patch

Vendor Advisories (2)

goGHSA-qcvw-82hh-gq38high

Istio ReDoS Vulnerability

May 24, 2022
redhatCVE-2019-14993Important

istio/envoy: mishandling regular expressions for long URIs leading to DoS

Oct 9, 2019

References

discuss.istio.io / t/upcoming-security-updates-in-istio-1-2-4-and-1-1-13/3383
Vendor Advisory
gcc.gnu.org / bugzilla/show_bug.cgi
ExploitIssue TrackingThird Party Advisory
github.com / envoyproxy/envoy/issues/7728
ExploitIssue TrackingThird Party Advisory
istio.io / blog/2019/istio-security-003-004
Vendor Advisory