How severe is CVE-2022-31559?

CVE-2022-31559 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability low.

Is CVE-2022-31559 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-31559?

CVE-2022-31559 affects Flask-yeoman Project Flask-yeoman. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-31559?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2022-31559 published?

CVE-2022-31559 was published on 2022-07-11 and last updated on 2026-06-17.

CVE-2022-31559

CVE-2022-31559 is a critical-severity vulnerability in Flask-yeoman Project Flask-yeoman with a CVSS 3.x base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: Critical (CVSS 3.x base score 9.3)
CVSS v2: 6.4
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Flask-yeoman Project Flask-yeoman
Published: 2022-07-11
Last modified: 2026-06-17

Description

The tsileo/flask-yeoman repository through 2013-09-13 on GitHub allows absolute path traversal because the Flask send_file function is used unsafely.

Frequently asked questions

What is CVE-2022-31559?: The tsileo/flask-yeoman repository through 2013-09-13 on GitHub allows absolute path traversal because the Flask send_file function is used unsafely.
How severe is CVE-2022-31559?: CVE-2022-31559 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability low.
Is CVE-2022-31559 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-31559?: CVE-2022-31559 affects Flask-yeoman Project Flask-yeoman. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-31559?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-31559 published?: CVE-2022-31559 was published on 2022-07-11 and last updated on 2026-06-17.

References

https://github.com/github/securitylab/issues/669#issuecomment-1117265726

Affected products (1)

cpe:2.3:a:flask-yeoman_project:flask-yeoman:*:*:*:*:*:*:*:*

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