CVE-2026-27888

pypdf is a free and open-source pure-python PDF library. Prior to 6.7.3, an attacker who uses this vulnerability can craft a PDF which leads to the RAM being exhausted. This requires accessing the xfa property of a reader or writer and the corresponding stream being compressed using /FlateDecode...

pretix (>=4.17.0, <=4.17.1), providentia (2.4.0) potentially affected by CVE-2026-27628 via pypdf (3.4.1)

pypdf PYPI version 3.4.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - pretix =4.17.0, =4.17.1 - providentia 2.4.0 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

pymorant (>=1.0.145, <=1.0.156) potentially affected by CVE-2026-27628 via pypdf (3.16.1)

pypdf PYPI version 3.16.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - pymorant =1.0.145, =1.0.156 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

ai-enterprise-agent (>=0.0.4, <=0.0.9), almax-common (>=1.0.5.dev20240601224039, <=1.0.7.dev20240801212517) +25 more potentially affected by CVE-2026-27628 via pypdf (4.2.0)

pypdf PYPI version 4.2.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - ai-enterprise-agent =0.0.4, =1.0.5.dev20240601224039, =2024.7.4, =0.6.22, =0.2.1, =0.2.0, =0.0.5, =0.2.1, =3.3.2, =0.1.0, =0.0.1, =4.7.1, =0.1.0, =0.1...

gai-common (>=0.1.2, <=0.86.0), gai-lib (0.120.0) +4 more potentially affected by CVE-2026-27628 via pypdf (4.3.0)

pypdf PYPI version 4.3.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - gai-common =0.1.2, =1.1.3, =0.3.1, =5.3.8, =0.6.6, =0.7.0 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

agatta (>=0.9.1, <=0.9.4), automate3 (2023.11.7) +5 more potentially affected by CVE-2026-27628 via pypdf (3.17.0)

pypdf PYPI version 3.17.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - agatta =0.9.1, =1698926697.0.0, =9.2.3, =9.2.6 - uniflow 0.0.7 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

GHSA-2RW7-X74F-JG35 pypdf has a possible infinite loop when loading circular /Prev entries in cross-reference streams

Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires reading the file. Patches This has been fixed in pypdf==6.7.2. Workarounds If users cannot upgrade yet, consider applying the changes from PR 3655...

krummstab (>=0.2.0, <=1.2.1) potentially affected by CVE-2026-27628 via pypdf (3.1.0)

pypdf PYPI version 3.1.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - krummstab =0.2.0, =1.2.1 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

cocpyth (>=0.1.1, <=0.1.2), pretix (>=4.19.0, <=4.20.4) potentially affected by CVE-2026-27628 via pypdf (3.8.1)

pypdf PYPI version 3.8.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - cocpyth =0.1.1, =4.19.0, =4.20.4 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

pdfmerge (1.0.0), ribometric (>=0.1.4, <=0.1.12) potentially affected by CVE-2026-27628 via pypdf (3.9.0)

pypdf PYPI version 3.9.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - pdfmerge 1.0.0 - ribometric =0.1.4, =0.1.12 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

calibreweb (0.6.20) potentially affected by CVE-2026-27628 via pypdf (3.5.2)

pypdf PYPI version 3.5.2 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - calibreweb 0.6.20 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

py40kie (>=0.1.0, <=0.2.2) potentially affected by CVE-2026-27628 via pypdf (3.12.2)

pypdf PYPI version 3.12.2 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - py40kie =0.1.0, =0.2.2 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

docrx (>=0.0.1, <=0.0.10), paperreview (0.1.0) +1 more potentially affected by CVE-2026-27628 via pypdf (3.15.0)

pypdf PYPI version 3.15.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - docrx =0.0.1, =1.1.11, =1.1.13 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

bondai (>=0.1.0, <=0.3.0b2) potentially affected by CVE-2026-27628 via pypdf (3.15.1)

pypdf PYPI version 3.15.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - bondai =0.1.0, =0.3.0b2 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

calibreweb (0.6.21), sysnet-pdffiller (>=1.1.0, <=1.2.1) potentially affected by CVE-2026-27628 via pypdf (3.15.5)

pypdf PYPI version 3.15.5 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - calibreweb 0.6.21 - sysnet-pdffiller =1.1.0, =1.2.1 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

render50 (9.2.2) potentially affected by CVE-2026-27628 via pypdf (3.15.3)

pypdf PYPI version 3.15.3 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - render50 9.2.2 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

chellow (>=1692799408.0.0, <=1698672999.0.0), pspdfutils (>=3.1.2, <=3.2.0) potentially affected by CVE-2026-27628 via pypdf (3.15.2)

pypdf PYPI version 3.15.2 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - chellow =1692799408.0.0, =3.1.2, =3.2.0 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

smart-pdf (2023.9.11.1) potentially affected by CVE-2026-27628 via pypdf (3.16.0)

pypdf PYPI version 3.16.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - smart-pdf 2023.9.11.1 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

assert-files (>=0.1.0, <=0.1.3), vpplib (0.0.4) +1 more potentially affected by CVE-2026-27628 via pypdf (3.16.4)

pypdf PYPI version 3.16.4 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - assert-files =0.1.0, =0.61.0, =0.65.0 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

a-data-processing (0.0.1), ab-data-processing (0.0.1) +9 more potentially affected by CVE-2026-27628 via pypdf (3.17.1)

pypdf PYPI version 3.17.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - a-data-processing 0.0.1 - ab-data-processing 0.0.1 - arac 0.0.1 - crate-anon 0.20.7 - generalagent =0.0.6, =0.0.1, =0.1.0, =0.0.1, =0.0.14 - pyxreade...