Resource exhaustion in Palletsprojects Jinja
CVE-2020-28493
This affects the package jinja2 from 0.0.0 and before 2.11.3. The ReDoS vulnerability is mainly due to the `_punctuation_re regex` operator and its use of multiple wildcards. The last wildcard is the most exploitable as it searches for tra…
Vulnerability class: DoS (Denial of Service)
EPSS: 0.035 (88.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Palletsprojects Jinja
- Fedoraproject Fedora — versions 33
- N/a Jinja2 — versions 0.0.0, unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- report@snyk.io (Exploit, Third Party Advisory, x_refsource_MISC)
- report@snyk.io (x_refsource_MISC, Broken Link)
- report@snyk.io (Patch, Third Party Advisory, x_refsource_MISC)
- report@snyk.io (x_refsource_FEDORA, vendor-advisory)
- report@snyk.io (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
Frequently asked questions
- What is CVE-2020-28493?
- CVE-2020-28493 is a medium-severity vulnerability in Palletsprojects Jinja, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2021-02-01.
- How severe is CVE-2020-28493?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2020-28493 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.