UBUNTU-CVE-2026-115559

IMAP4.starttls wraps the socket in TLS but leaves self.readbuf, imaplib's own read-ahead buffer, untouched. Any plaintext bytes that arrived in the same recv as the tagged OK to STARTTLS are returned by readline after the handshake, so the client treats them as the first responses on the protecte...

CVE-2026-115559

IMAP4.starttls wraps the socket in TLS but leaves self.readbuf, imaplib's own read-ahead buffer, untouched. Any plaintext bytes that arrived in the same recv as the tagged OK to STARTTLS are returned by readline after the handshake, so the client treats them as the first responses on the protecte...

AZL-113323 CVE-2026-115559 affecting package python-py 1.11.0-1

IMAP4.starttls wraps the socket in TLS but leaves self.readbuf, imaplib's own read-ahead buffer, untouched. Any plaintext bytes that arrived in the same recv as the tagged OK to STARTTLS are returned by readline after the handshake, so the client treats them as the first responses on the protecte...

AZL-113329 CVE-2026-115559 affecting package python3 3.12.16-2

IMAP4.starttls wraps the socket in TLS but leaves self.readbuf, imaplib's own read-ahead buffer, untouched. Any plaintext bytes that arrived in the same recv as the tagged OK to STARTTLS are returned by readline after the handshake, so the client treats them as the first responses on the protecte...

CVE-2026-115559 imaplib STARTTLS serves plaintext bytes buffered before the handshake as if they came over TLS

IMAP4.starttls wraps the socket in TLS but leaves self.readbuf, imaplib's own read-ahead buffer, untouched. Any plaintext bytes that arrived in the same recv as the tagged OK to STARTTLS are returned by readline after the handshake, so the client treats them as the first responses on the protecte...

EUVD-2026-122790

IMAP4.starttls wraps the socket in TLS but leaves self.readbuf, imaplib's own read-ahead buffer, untouched. Any plaintext bytes that arrived in the same recv as the tagged OK to STARTTLS are returned by readline after the handshake, so the client treats them as the first responses on the protecte...

CVE-2026-115559

IMAP4.starttls wraps the socket in TLS but leaves self.readbuf, imaplib's own read-ahead buffer, untouched. Any plaintext bytes that arrived in the same recv as the tagged OK to STARTTLS are returned by readline after the handshake, so the client treats them as the first responses on the protecte...

CVE-2026-115559

The imaplib library in Python is vulnerable to a STARTTLS command/response injection (similar to CVE-2011-0411). The IMAP4.starttls() function wraps the socket in TLS but fails to clear the self._readbuf read-ahead buffer. Consequently, plaintext bytes received during the recv() call for the STAR...

PT-2026-144403

IMAP4.starttls wraps the socket in TLS but leaves self. readbuf, imaplib's own read-ahead buffer, untouched. Any plaintext bytes that arrived in the same recv as the tagged OK to STARTTLS are returned by readline after the handshake, so the client treats them as the first responses on the protect...

EulerOS Virtualization 2.15.0 : python3 (EulerOS-SA-2026-4849)

According to the versions of the python3 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : unicodedata.normalize can take excessive CPU time when processing specially crafted Unicode input containing long runs of combinin...

EulerOS 2.0 SP15 : python3 (EulerOS-SA-2026-3946)

According to the versions of the python3 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : unicodedata.normalize can take excessive CPU time when processingx000D specially crafted Unicode input containing long runs of combining...

EulerOS 2.0 SP15 : python3 (EulerOS-SA-2026-4012)

According to the versions of the python3 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : unicodedata.normalize can take excessive CPU time when processingx000D specially crafted Unicode input containing long runs of combining...

PYSEC-2026-4134 PickleScan has multiple stdlib modules with direct RCE not in blocklist

Summary picklescan v1.0.3 latest does not block at least 7 Python standard library modules that provide direct arbitrary command execution or code evaluation. A malicious pickle file importing these modules is reported as having 0 issues CLEAN scan. This enables remote code execution that bypasse...

PickleScan has multiple stdlib modules with direct RCE not in blocklist

Summarypicklescan v1.0.3 latest does not block at least 7 Python standard library modules that provide direct arbitrary command execution or code evaluation. A malicious pickle file importing these modules is reported as having 0 issues CLEAN scan. This enables remote code execution that bypasses...

AlmaLinux 9.2 [TuxCare] Security Update: python-unversioned-command / python3 / python3-debug / etc (ALMALINUX9.2:CLSA-2026:1776091275)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2026:1776091275 advisory. - The imaplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects command...

Rocky Linux 9.6 [TuxCare] Security Update: python3.11 / python3.11-debug / python3.11-devel / python3.11-idle / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1774525255)

The Rocky Linux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1774525255 advisory. - The imaplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation...

AlmaLinux 9.6 [TuxCare] Security Update: python3.11 / python3.11-debug / python3.11-devel / python3.11-idle / etc Multiple Vulnerabilities (ALMALINUX9.6:CLSA-2026:1774525255)

The AlmaLinux 9.6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1774525255 advisory. - The imaplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation reject...

CentOS Linux 6 [TuxCare] Security Update: python / python-devel / python-libs / python-test / python-tools / etc Multiple Vulnerabilities (CENTOS6:CLSA-2026:1782980748)

The CentOS Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS6:CLSA-2026:1782980748 advisory. - The imaplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation rejects...

CentOS Linux 8.4 [TuxCare] Security Update: platform-python / platform-python-debug / platform-python-devel / etc Multiple Vulnerabilities (CENTOS8.4:CLSA-2026:1771494614)

The CentOS Linux 8.4 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS8.4:CLSA-2026:1771494614 advisory. - The imaplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation reject...

CentOS Linux 8.4 [TuxCare] Security Update: python2 / python2-debug / python2-devel / python2-libs / etc Multiple Vulnerabilities (CENTOS8.4:CLSA-2026:1771931183)

The CentOS Linux 8.4 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS8.4:CLSA-2026:1771931183 advisory. - The imaplib module, when passed a user-controlled command, can have additional commands injected using newlines. Mitigation reject...