pypdf: Possible infinite loop when processing outlines/bookmarks in writer

ImpactAn attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires merging a file with outlines into a writer. PatchesThis has been fixed in pypdf==6.13.0. WorkaroundsIf you cannot upgrade yet, consider applying the changes from PR 3830...

agentc-llamaindex (0.2.5a2), agentia (>=0.0.2, <=0.0.10) +245 more potentially affected by CVE-2026-54530 via pypdf (5.9.0)

pypdf PYPI version 5.9.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - agentc-llamaindex 0.2.5a2 - agentia =0.0.2, =0.0.1, =0.1.4, =0.1.0a0.dev0, =0.2.0a0, =0.11.2, =1.1.0a20250429, =3.1.8, =1.0.5, =1.0.0, =0.1.0, =1.1.1,...

cewler (1.2.0.post1), python-xdoc (>=0.1.0, <=0.1.1) potentially affected by CVE-2026-48735 via pypdf (4.0.1)

pypdf PYPI version 4.0.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - cewler 1.2.0.post1 - python-xdoc =0.1.0, =0.1.1 Source cves: CVE-2026-48735 Source advisory: OSV:PYSEC-2026-3025...

athena-starship (>=0.0.3, <=0.0.6), conflare (>=0.1.2, <=0.1.3) +11 more potentially affected by CVE-2026-48735 via pypdf (4.1.0)

pypdf PYPI version 4.1.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - athena-starship =0.0.3, =0.1.2, =2.2.0, =0.0.1, =3.3.0, =1.14.0, =0.1.4, =4.6.2, =0.1.0, =0.1.58 Source cves: CVE-2026-48735 Source advisory:...

athena-starship (>=0.0.3, <=0.0.6), conflare (>=0.1.2, <=0.1.3) +11 more potentially affected by CVE-2026-54530 via pypdf (4.1.0)

pypdf PYPI version 4.1.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - athena-starship =0.0.3, =0.1.2, =2.2.0, =0.0.1, =3.3.0, =1.14.0, =0.1.4, =4.6.2, =0.1.0, =0.1.58 Source cves: CVE-2026-54530 Source advisory:...

pypdf: Possible infinite loop when retrieving fonts for layout-mode text extraction

ImpactAn attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires extracting the text in layout mode. PatchesThis has been fixed in pypdf==6.13.0. WorkaroundsIf you cannot upgrade yet, consider applying the changes from PR 3830...

pspdfutils (>=3.0.5, <=3.0.7) potentially affected by CVE-2026-54530 via pypdf (3.10.0)

pypdf PYPI version 3.10.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - pspdfutils =3.0.5, =3.0.7 Source cves: CVE-2026-54530 Source advisory: OSV:PYSEC-2026-3009...

pspdfutils (>=3.0.5, <=3.0.7) potentially affected by CVE-2026-54531 via pypdf (3.10.0)

pypdf PYPI version 3.10.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - pspdfutils =3.0.5, =3.0.7 Source cves: CVE-2026-54531 Source advisory: OSV:PYSEC-2026-3022...

pdfmerge (1.0.0), ribometric (>=0.1.4, <=0.1.12) potentially affected by CVE-2026-54530 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-2026-54530 Source advisory: OSV:PYSEC-2026-3009...

pdfmerge (1.0.0), ribometric (>=0.1.4, <=0.1.12) potentially affected by CVE-2026-54531 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-2026-54531 Source advisory: OSV:PYSEC-2026-3022...

criscostack (1.0.0), neumai (>=0.0.9, <=0.0.36) +2 more potentially affected by CVE-2026-48735 via pypdf (3.9.1)

pypdf PYPI version 3.9.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - criscostack 1.0.0 - neumai =0.0.9, =0.0.17, =2023.6.0, =2024.4.0 Source cves: CVE-2026-48735 Source advisory: OSV:PYSEC-2026-3025...

chellow (>=1688456919.0.0, <=1692616986.0.0), cybrex (>=1.0.1, <=1.0.7) potentially affected by CVE-2026-54531 via pypdf (3.12.0)

pypdf PYPI version 3.12.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - chellow =1688456919.0.0, =1.0.1, =1.0.7 Source cves: CVE-2026-54531 Source advisory: OSV:PYSEC-2026-3022...

indico (>=3.2.6, <=3.2.9) potentially affected by CVE-2026-54531 via pypdf (3.12.1)

pypdf PYPI version 3.12.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - indico =3.2.6, =3.2.9 Source cves: CVE-2026-54531 Source advisory: OSV:PYSEC-2026-3022...

pdfmerge (1.0.0), ribometric (>=0.1.4, <=0.1.12) potentially affected by CVE-2026-48735 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-2026-48735 Source advisory: OSV:PYSEC-2026-3025...

criscostack (1.0.0), neumai (>=0.0.9, <=0.0.36) +2 more potentially affected by CVE-2026-54530 via pypdf (3.9.1)

pypdf PYPI version 3.9.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - criscostack 1.0.0 - neumai =0.0.9, =0.0.17, =2023.6.0, =2024.4.0 Source cves: CVE-2026-54530 Source advisory: OSV:PYSEC-2026-3009...

criscostack (1.0.0), neumai (>=0.0.9, <=0.0.36) +2 more potentially affected by CVE-2026-54531 via pypdf (3.9.1)

pypdf PYPI version 3.9.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - criscostack 1.0.0 - neumai =0.0.9, =0.0.17, =2023.6.0, =2024.4.0 Source cves: CVE-2026-54531 Source advisory: OSV:PYSEC-2026-3022...

chellow (>=1688456919.0.0, <=1692616986.0.0), cybrex (>=1.0.1, <=1.0.7) potentially affected by CVE-2026-54530 via pypdf (3.12.0)

pypdf PYPI version 3.12.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - chellow =1688456919.0.0, =1.0.1, =1.0.7 Source cves: CVE-2026-54530 Source advisory: OSV:PYSEC-2026-3009...

chellow (>=1688456919.0.0, <=1692616986.0.0), cybrex (>=1.0.1, <=1.0.7) potentially affected by CVE-2026-48735 via pypdf (3.12.0)

pypdf PYPI version 3.12.0 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - chellow =1688456919.0.0, =1.0.1, =1.0.7 Source cves: CVE-2026-48735 Source advisory: OSV:PYSEC-2026-3025...

indico (>=3.2.6, <=3.2.9) potentially affected by CVE-2026-54530 via pypdf (3.12.1)

pypdf PYPI version 3.12.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - indico =3.2.6, =3.2.9 Source cves: CVE-2026-54530 Source advisory: OSV:PYSEC-2026-3009...

indico (>=3.2.6, <=3.2.9) potentially affected by CVE-2026-48735 via pypdf (3.12.1)

pypdf PYPI version 3.12.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - indico =3.2.6, =3.2.9 Source cves: CVE-2026-48735 Source advisory: OSV:PYSEC-2026-3025...