7.5

CVE-2018-1000656: palletsprojects flask Improper Input Validation

CVSS: 7.5v3.0HighModified
AliasesSUSE-SU-2019:0657-1GHSA-562c-5r94-xh97PYSEC-2018-66
Published 20-08-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-1000656 is a high (CVSS 7.5) Improper Input Validation vulnerability in palletsprojects flask. EPSS estimates a 3.85% chance of exploitation in the next 30 days, higher than 90% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
3.85%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 20-08-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

The Pallets Project flask version Before 0.12.3 contains a CWE-20: Improper Input Validation vulnerability in flask that can result in Large amount of memory usage possibly leading to denial of service. This attack appear to be exploitable via Attacker provides JSON data in incorrect encoding. This vulnerability appears to have been fixed in 0.12.3. NOTE: this may overlap CVE-2019-1010083.

CVSS metrics

7 scores · 5 sources · 4 versions

EPSS trend

Probability

3.85%

Chance of exploitation in the next 30 days

Percentile

90%

Versus all other CVEs

30-day change

0.00 pp

From 3.85% on 18-09-2026

18-09-202618-10-2026
EPSS score
3.85%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Suse2 products
  • python-Flask&distro=SUSE Linux Enterprise Module for Basesystem 15< 0.12.4-3.3.26
  • python-Flask&distro=SUSE Linux Enterprise Module for Package Hub 15< 0.12.4-3.3.26
Debian1 product
  • flask< 1.0.2-1 | < 0.10.1-2+deb8u1
Opensuse1 product
  • python-Flask&distro=openSUSE Leap 15.0< 0.12.4-lp150.2.3.1
Palletsprojects1 product
PyPI1 product
  • flask< 0.12.3
Redhat1 product
  • python-flask< 1:0.10.1-5.el7_7
Ubuntu1 product
  • flask< 0.10.1-2ubuntu0.1~esm1 | < 0.10.1-2ubuntu0.1 | < 0.12.2-3ubuntu0.1

7 vendors · 8 products

References

25 links
Show all 25 references