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[pyexpat] Billion laughs mitigation methods backported to 3.10, 3.11, 3.12 #16203

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Merged
srittau merged 2 commits into from
Aug 13, 2026
Merged

[pyexpat] Billion laughs mitigation methods backported to 3.10, 3.11, 3.12 #16203

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[pyexpat] Billion laughs mitigation methods backported to 3.10, 3.11,…
donbarbos Aug 13, 2026
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donbarbos Aug 13, 2026
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5 changes: 5 additions & 0 deletions stdlib/@tests/stubtest_allowlists/darwin-py310.txt
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Expand Up @@ -58,6 +58,11 @@ tarfile.LinkFallbackError
tarfile.TarFile._extract_member
tarfile.TarFile.makelink_with_filter

# Incompatible changes introduced in Python 3.10.19
# (Remove once 3.10.19 becomes available for GitHub Actions)
pyexpat.XMLParserType.SetBillionLaughsAttackProtectionActivationThreshold
pyexpat.XMLParserType.SetBillionLaughsAttackProtectionMaximumAmplification

# Incompatible changes introduced in Python 3.10.20
# (Remove once 3.10.20 becomes available for GitHub Actions)
email._header_value_parser.make_parenthesis_pairs
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5 changes: 5 additions & 0 deletions stdlib/@tests/stubtest_allowlists/darwin-py311.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,11 @@ tarfile.LinkFallbackError
tarfile.TarFile._extract_member
tarfile.TarFile.makelink_with_filter

# Incompatible changes introduced in Python 3.11.14
# (Remove once 3.11.14 becomes available for GitHub Actions)
pyexpat.XMLParserType.SetBillionLaughsAttackProtectionActivationThreshold
pyexpat.XMLParserType.SetBillionLaughsAttackProtectionMaximumAmplification

# Incompatible changes introduced in Python 3.11.15
# (Remove once 3.11.15 becomes available for GitHub Actions)
email._header_value_parser.make_parenthesis_pairs
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5 changes: 5 additions & 0 deletions stdlib/@tests/stubtest_allowlists/darwin-py312.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,11 @@ tarfile.LinkFallbackError
tarfile.TarFile._extract_member
tarfile.TarFile.makelink_with_filter

# Incompatible changes introduced in Python 3.12.12
# (Remove once 3.12.12 becomes available for GitHub Actions)
pyexpat.XMLParserType.SetBillionLaughsAttackProtectionActivationThreshold
pyexpat.XMLParserType.SetBillionLaughsAttackProtectionMaximumAmplification

# Incompatible changes introduced in Python 3.12.13
# (Remove once 3.12.13 becomes available for GitHub Actions)
email._header_value_parser.make_parenthesis_pairs
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5 changes: 5 additions & 0 deletions stdlib/@tests/stubtest_allowlists/win32-py310.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,11 @@ tarfile.LinkFallbackError
tarfile.TarFile._extract_member
tarfile.TarFile.makelink_with_filter

# Incompatible changes introduced in Python 3.10.19
# (Remove once 3.10.19 becomes available for GitHub Actions)
pyexpat.XMLParserType.SetBillionLaughsAttackProtectionActivationThreshold
pyexpat.XMLParserType.SetBillionLaughsAttackProtectionMaximumAmplification

# Incompatible changes introduced in Python 3.10.20
# (Remove once 3.10.20 becomes available for GitHub Actions)
email._header_value_parser.make_parenthesis_pairs
Expand Down
5 changes: 5 additions & 0 deletions stdlib/@tests/stubtest_allowlists/win32-py311.txt
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,11 @@ tarfile.LinkFallbackError
tarfile.TarFile._extract_member
tarfile.TarFile.makelink_with_filter

# Incompatible changes introduced in Python 3.11.14
# (Remove once 3.11.14 becomes available for GitHub Actions)
pyexpat.XMLParserType.SetBillionLaughsAttackProtectionActivationThreshold
pyexpat.XMLParserType.SetBillionLaughsAttackProtectionMaximumAmplification

# Incompatible changes introduced in Python 3.11.15
# (Remove once 3.11.15 becomes available for GitHub Actions)
email._header_value_parser.make_parenthesis_pairs
Expand Down
5 changes: 5 additions & 0 deletions stdlib/@tests/stubtest_allowlists/win32-py312.txt
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,11 @@ tarfile.LinkFallbackError
tarfile.TarFile._extract_member
tarfile.TarFile.makelink_with_filter

# Incompatible changes introduced in Python 3.12.12
# (Remove once 3.12.12 becomes available for GitHub Actions)
pyexpat.XMLParserType.SetBillionLaughsAttackProtectionActivationThreshold
pyexpat.XMLParserType.SetBillionLaughsAttackProtectionMaximumAmplification

# Incompatible changes introduced in Python 3.12.13
# (Remove once 3.12.13 becomes available for GitHub Actions)
email._header_value_parser.make_parenthesis_pairs
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9 changes: 3 additions & 6 deletions stdlib/pyexpat/__init__.pyi
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Original file line number Diff line number Diff line change
@@ -1,4 +1,3 @@
import sys
from _typeshed import ReadableBuffer, SupportsRead
from collections.abc import Callable
from pyexpat import errors as errors, model as model
Expand Down Expand Up @@ -33,11 +32,9 @@ class XMLParserType:
# Added in Python 3.10.20, 3.11.15, 3.12.3, 3.13.10, 3.14.1
def SetAllocTrackerActivationThreshold(self, threshold: int, /) -> None: ...
def SetAllocTrackerMaximumAmplification(self, max_factor: float, /) -> None: ...
if sys.version_info >= (3, 13):
# Added in Python 3.13.4, 3.14.6
def SetBillionLaughsAttackProtectionActivationThreshold(self, threshold: int, /) -> None: ...
def SetBillionLaughsAttackProtectionMaximumAmplification(self, max_factor: float, /) -> None: ...

# Added in Python 3.10.19, 3.11.14, 3.12.12, 3.13.4, 3.14.6
def SetBillionLaughsAttackProtectionActivationThreshold(self, threshold: int, /) -> None: ...
def SetBillionLaughsAttackProtectionMaximumAmplification(self, max_factor: float, /) -> None: ...
@property
def intern(self) -> dict[str, str]: ...
buffer_size: int
Expand Down