HOMEVULNERABILITIESCVE-2020-5274
MEDIUM

CVE-2020-5274

CWE-209Published: March 30, 2020· Updated: Jun 17, 2026

5.4
CVSS v3.1

Official Description

In Symfony before versions 5.0.5 and 4.4.5, some properties of the Exception were not properly escaped when the `ErrorHandler` rendered it stacktrace. In addition, the stacktrace were displayed even in a non-debug configuration. The ErrorHandler now escape alls properties of the exception, and the stacktrace is only display in debug configuration. This issue is patched in symfony/http-foundation versions 4.4.5 and 5.0.5

NVD Source

Technical Analysis

CVE-2020-5274 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Affected Vendors & Products

sensiolabs1 product(s)
symfony
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/symfony/symfony/commit/629d21b800a15dc649fb0ae9ed7cd9211e7e45db
PATCHhttps://github.com/symfony/symfony/commit/cf80224589ac05402d4f72f5ddf80900ec94d5ad
PATCHhttps://github.com/symfony/symfony/commit/629d21b800a15dc649fb0ae9ed7cd9211e7e45db
PATCHhttps://github.com/symfony/symfony/commit/cf80224589ac05402d4f72f5ddf80900ec94d5ad
ADVISORYhttps://github.com/symfony/symfony/security/advisories/GHSA-m884-279h-32v2
ADVISORYhttps://github.com/symfony/symfony/security/advisories/GHSA-m884-279h-32v2

All References (6)

→
https://github.com/symfony/symfony/commit/629d21b800a15dc649fb0ae9ed7cd9211e7e45dbPatch · Third Party Advisory
→
https://github.com/symfony/symfony/commit/cf80224589ac05402d4f72f5ddf80900ec94d5adPatch · Third Party Advisory
→
https://github.com/symfony/symfony/security/advisories/GHSA-m884-279h-32v2Third Party Advisory
→
https://github.com/symfony/symfony/commit/629d21b800a15dc649fb0ae9ed7cd9211e7e45dbPatch · Third Party Advisory
→
https://github.com/symfony/symfony/commit/cf80224589ac05402d4f72f5ddf80900ec94d5adPatch · Third Party Advisory
→
https://github.com/symfony/symfony/security/advisories/GHSA-m884-279h-32v2Third Party Advisory

Quick Facts

CVE IDCVE-2020-5274
CVSS Score5.4 / 10
SeverityMEDIUM
WeaknessCWE-209
CISA KEVNo
Affected1 vendor(s)
PublishedMar 30, 2020

Related CVEs (CWE-209)

CVE-2024-28285
9.8
CVE-2017-7945
9.8
CVE-2023-40757
9.8
CVE-2021-42777
9.8
CVE-2019-7612
9.8
CVE-2018-11325
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-5274 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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