CVE-2026-27888 pypdf: Manipulated FlateDecode XFA streams can exhaust RAM

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...

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...

CVE-2026-27888 pypdf: Manipulated FlateDecode XFA streams can exhaust RAM

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...

CVE-2026-27888 pypdf: Manipulated FlateDecode XFA streams can exhaust RAM

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...

CVE-2026-27888

CVE-2026-27888 affects the pypdf library (Python) prior to 6.7.3. The issue arises when an attacker crafts a PDF that causes RAM exhaustion by accessing the reader/writer’s xfa property and a compressed stream using FlateDecode, leading to high availability impact. The vulnerability does not disc...

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...

CVE-2026-27888: Uncontrolled Resource Consumption

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...

pypdf 资源管理错误漏洞

pypdf is an open-source, free, and pure Python PDF library developed by py-pdf. It allows for splitting, merging, cropping, and converting pages of PDF files. Prior to version 6.7.3 of pypdf, there was a resource management vulnerability that could lead to memory exhaustion due to specially craft...

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...

gpt3discord (>=11.7.3, <=12.3.8) potentially affected by CVE-2026-27628 via pypdf (3.11.1)

pypdf PYPI version 3.11.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - gpt3discord =11.7.3, =12.3.8 Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

agentc-llamaindex (0.2.5a2), agentia (>=0.0.2, <=0.0.10) +243 more potentially affected by CVE-2026-27628 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, =1.1.0a20250429, =3.1.8, =1.0.5, =1.0.0, =0.1.0, =1.1.1, =1.4.2,...

aiagents4pharma (>=0.0.0, <=1.49.1), aiagents4pharma-ansh (0.0.0) +51 more potentially affected by CVE-2026-27628 via pypdf (>=6.0.0, <=6.7.1)

pypdf PYPI version =6.0.0, =0.0.0, =0.2.0, =0.2.0, =0.0.3, =6.2.61, =1.0.20, =0.12.0, =2.4.23, =1.4.0, =1.4.1 and more Source cves: CVE-2026-27628 Source advisory: GHSA-2RW7-X74F-JG35...

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...

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...

add-staves (>=0.1.1, <=0.2.4), agentix-agent-sdk (0.1.0) +137 more potentially affected by CVE-2026-27628 via pypdf (4.3.1)

pypdf PYPI version 4.3.1 is affected by a known vulnerability. The following packages have a transitive dependency on pypdf and may be impacted: - add-staves =0.1.1, =0.0.1, =0.0.1.dev1, =3.0.0, =0.1.0, =1.0.0, =0.3.8.0, =0.3.2, =0.1.6, =1725528079.0.0, =0.1.4, =0.1.9 and more Source cves:...

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...

aiagents4pharma (>=0.0.0, <=1.49.1), aiagents4pharma-ansh (0.0.0) +51 more potentially affected by CVE-2026-27628 via pypdf (>=6.0.0, <=6.7.1)

pypdf PYPI version =6.0.0, =0.0.0, =0.2.0, =0.2.0, =0.0.3, =6.2.61, =1.0.20, =0.12.0, =2.4.23, =1.4.0, =1.4.1 and more Source cves: CVE-2026-27628 Source advisory: OSV:GHSA-2RW7-X74F-JG35...

pspdfutils (>=3.0.5, <=3.0.7) potentially affected by CVE-2026-27628 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-2026-27628 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...

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...