CVE-2019-11717: debian debian_linux Improper Encoding or Escaping of Output
Vulnerability summary
CVE-2019-11717 is a medium (CVSS 5.3) Improper Encoding or Escaping of Output vulnerability in debian debian_linux. EPSS estimates a 2.13% chance of exploitation in the next 30 days, higher than 81.9% of scored vulnerabilities. 1 public exploit is recorded.
Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 34 · Related 20Timeline
- 23-07-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A vulnerability exists where the caret ("^") character is improperly escaped constructing some URIs due to it being used as a separator, allowing for possible spoofing of origin attributes. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
CVSS metrics
6 scores · 4 sources · 3 versions- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- OSV · DebianEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- OSV · AlpineEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS trend
Probability
2.13%
Chance of exploitation in the next 30 days
Percentile
82%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.13% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (bugzilla.mozilla.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu4 products
- firefox< 68.0+build3-0ubuntu0.16.04.1 | < 68.0+build3-0ubuntu0.18.04.1
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
- thunderbird< 1:60.8.0+build1-0ubuntu0.16.04.2 | < 1:60.8.0+build1-0ubuntu0.18.04.1
Debian3 products
- firefox-esr< 60.8.0esr-1
- thunderbird< 1:60.8.0-1
- debian_linuxEOL8.0
Mozilla3 products
- firefox≥ unspecified, < 68 | < 60.8.0 | < 68.0
- firefox esr≥ unspecified, < 60.8
- thunderbird≥ unspecified, < 60.8 | < 60.8.0
Alpine1 product
- firefox-esr< 60.8.0-r0 | < 68.0-r0
Novell1 product
Opensuse1 product
- leapEOL15.0 | 15.1
6 vendors · 13 products
References
21 links- lists.opensuse.org/opensuse-security-announce/2019-07/msg00055.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
lists.debian.org/debian-lts-announce/2019/08/msg00001.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.debian.org/debian-lts-announce/2019/08/msg00002.htmlMailing ListX Refsource MLISTThird Party Advisory
Show all 21 references
- lists.opensuse.org/opensuse-security-announce/2019-08/msg00073.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.htmlVendor AdvisoryX Refsource SUSEThird Party Advisory