CVE-2020-1695: fedoraproject fedora Improper Input Validation
Vulnerability summary
CVE-2020-1695 is a high (CVSS 7.5) Improper Input Validation vulnerability in fedoraproject fedora. EPSS estimates a 2.02% chance of exploitation in the next 30 days, higher than 80.9% of scored vulnerabilities.
Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 2% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 8 · Related 2Timeline
- 19-05-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A flaw was found in all resteasy 3.x.x versions prior to 3.12.0.Final and all resteasy 4.x.x versions prior to 4.6.0.Final, where an improper input validation results in returning an illegal header that integrates into the server's response. This flaw may result in an injection, which leads to unexpected behavior when the HTTP response is constructed.
CVSS metrics
9 scores · 6 sources · 3 versions- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · MavenEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · Red hatEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- NVDNIST7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
2.02%
Chance of exploitation in the next 30 days
Percentile
81%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.02% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat61 products
- resteasy≥ 3.0.0, < 3.12.0 | ≥ 4.0.0, < 4.6.0
- apache-commons-collections< 0:3.2.2-10.module+el8.1.0+3366+6dfb954c
- apache-commons-lang< 0:2.6-21.module+el8.1.0+3366+6dfb954c
- apache-commons-net< 0:3.6-3.module+el8.3.0+6805+72837426
- bea-stax< 0:1.2.0-16.module+el8.1.0+3366+6dfb954c
Ubuntu2 products
- resteasy< 3.0.6-3ubuntu0.1~esm1 | < 3.6.2-2ubuntu0.20.04.1~esm1 | < 3.6.2-2ubuntu0.22.04.1~esm1 | < 3.6.2-2ubuntu0.24.04.1~esm1 | All versions (No fix recorded)
- resteasy3.0< 3.0.26-1~18.04.1~esm1 | < 3.0.26-1ubuntu0.1~esm1
Debian1 product
- resteasy3.0< 3.0.26-2
Fedoraproject1 product
- fedoraEOL32 | 33
Mageia1 product
- resteasy< 3.0.26-2.mga7
Org.jboss.resteasy1 product
- resteasy-client≥ 4.0.0, < 4.6.0 | ≥ 3.0.0, < 3.12.0
Red hat1 product
- resteasyall resteasy 3.x.x versions prior to 3.12.0.Final | all resteasy 4.x.x versions prior to 4.6.0.Final
7 vendors · 68 products
References
42 links- bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1695X Refsource CONFIRMWEBIssue TrackingPatchVendor Advisory