Linux Distros Unpatched Vulnerability : CVE-2026-53501

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor's HMAC validation can be bypassed due to the use of Python's .replace wh...

Linux Distros Unpatched Vulnerability : CVE-2026-53504

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, the convolution filter regular expression performs exponential backtracking on...

Linux Distros Unpatched Vulnerability : CVE-2026-53503

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor's filters:convolution, , filter passes the user-controlled value to a C...

Linux Distros Unpatched Vulnerability : CVE-2026-53505

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor's filters:proportion filter does not enforce an upper bound on and runs ...

Linux Distros Unpatched Vulnerability : CVE-2026-53502

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, fileloader decodes percent-encoded path segments after its root-boundary...

Linux Distros Unpatched Vulnerability : CVE-2026-53500

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, the ALLOWEDSOURCES configuration passes plain strings to re.match without escapi...

PYSEC-2026-3621 Thumbor proportion filter allows unbounded post-transform resize leading to remote DoS

Summary Thumbor's filters:proportion filter does not enforce an upper bound on and runs in the post-transform phase. An attacker can trigger extremely large resizes CPU/memory exhaustion and cause denial of service. Details - Filter implementation: thumbor/filters/proportion.py - value is parsed ...

Thumbor has Regex Denial of Service (ReDoS) in `convolution` filter

SummaryThe regular expression used to parse the convolution filter exhibits exponential-time backtracking for certain inputs, enabling a Regular Expression Denial of Service ReDoS. DetailsThe RegExp for convolution is defined as...

thumbor-piliptc-engine (>=7.4.7.3, <=7.4.7.4) potentially affected by CVE-2026-53504 via thumbor (7.4.7)

thumbor PYPI version 7.4.7 is affected by a known vulnerability. The following packages have a transitive dependency on thumbor and may be impacted: - thumbor-piliptc-engine =7.4.7.3, =7.4.7.4 Source cves: CVE-2026-53504 Source advisory: OSV:PYSEC-2026-3616...

PYSEC-2026-3620 Thumbor has HMAC validation bypass via multiple .replace() calls when removing URL signature

HMAC validation bypass via multiple .replace calls when removing URL signature Summary Thumbor’s HMAC validation can be bypassed due to the use of Python’s .replace when removing the signature from the URL before validation. Since .replace removes all occurrences of the substring, an attacker can...

thumbor-piliptc-engine (>=7.4.7.3, <=7.4.7.4) potentially affected by CVE-2026-53502 via thumbor (7.4.7)

thumbor PYPI version 7.4.7 is affected by a known vulnerability. The following packages have a transitive dependency on thumbor and may be impacted: - thumbor-piliptc-engine =7.4.7.3, =7.4.7.4 Source cves: CVE-2026-53502 Source advisory: OSV:PYSEC-2026-3618...

thumbor-piliptc-engine (>=7.4.7.3, <=7.4.7.4) potentially affected by CVE-2026-53500 via thumbor (7.4.7)

thumbor PYPI version 7.4.7 is affected by a known vulnerability. The following packages have a transitive dependency on thumbor and may be impacted: - thumbor-piliptc-engine =7.4.7.3, =7.4.7.4 Source cves: CVE-2026-53500 Source advisory: OSV:PYSEC-2026-3617...

Thumbor has HMAC validation bypass via multiple .replace() calls when removing URL signature

HMAC validation bypass via multiple .replace calls when removing URL signature SummaryThumbor’s HMAC validation can be bypassed due to the use of Python’s .replace when removing the signature from the URL before validation. Since .replace removes all occurrences of the substring, an attacker can...

Thumbor treats ALLOWED_SOURCES string patterns as unescaped regex, allowing hostname bypass via wildcard dot

SummaryThe ALLOWEDSOURCES configuration is meant to restrict which hosts Thumbor's HTTP loader may fetch images from. Plain-string entries in that list the overwhelming majority of real-world and documented configurations are passed directly to re.match without escaping. Because . is a regex...

thumbor-piliptc-engine (>=7.4.7.3, <=7.4.7.4) potentially affected by CVE-2026-53505 via thumbor (7.4.7)

thumbor PYPI version 7.4.7 is affected by a known vulnerability. The following packages have a transitive dependency on thumbor and may be impacted: - thumbor-piliptc-engine =7.4.7.3, =7.4.7.4 Source cves: CVE-2026-53505 Source advisory: OSV:PYSEC-2026-3621...

PYSEC-2026-3616 Thumbor has Regex Denial of Service (ReDoS) in `convolution` filter

Summary The regular expression used to parse the convolution filter exhibits exponential-time backtracking for certain inputs, enabling a Regular Expression Denial of Service ReDoS. Details The RegExp for convolution is defined as...

thumbor-piliptc-engine (>=7.4.7.3, <=7.4.7.4) potentially affected by CVE-2026-53501 via thumbor (7.4.7)

thumbor PYPI version 7.4.7 is affected by a known vulnerability. The following packages have a transitive dependency on thumbor and may be impacted: - thumbor-piliptc-engine =7.4.7.3, =7.4.7.4 Source cves: CVE-2026-53501 Source advisory: OSV:PYSEC-2026-3620...

PYSEC-2026-3617 Thumbor treats ALLOWED_SOURCES string patterns as unescaped regex, allowing hostname bypass via wildcard dot

Summary The ALLOWEDSOURCES configuration is meant to restrict which hosts Thumbor's HTTP loader may fetch images from. Plain-string entries in that list the overwhelming majority of real-world and documented configurations are passed directly to re.match without escaping. Because . is a regex...

Thumbor proportion filter allows unbounded post-transform resize leading to remote DoS

SummaryThumbor's filters:proportion filter does not enforce an upper bound on and runs in the post-transform phase. An attacker can trigger extremely large resizes CPU/memory exhaustion and cause denial of service. Details- Filter implementation: thumbor/filters/proportion.py - value is parsed as...

Thumbor has path traversal via post-validation URL decoding bypass in file_loader

The fileloader performs unquote on the file path AFTER the abspath + startswith security check. An attacker can use percent-encoded path traversal sequences %2e%2e for .. that pass the security check as literal directory names, but are then decoded to actual .. traversal sequences. Affected...