cve.bz

CVE-2020-13757

7.5 highEPSS 1.4%

High (7.5). EPSS 1.4% chance of exploitation in the next 30 days. Fixed in rsa 4.1.

Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).

Severity

CVSS 3.1

7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
1.4% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-10-31)
CWE
CWE-327
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-537h-rv9q-vvphPyPIrsa<4.14.1
PYSEC-2020-99PyPIrsa<4.14.1

References

Check your stackJSON